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RBI GRADE B 2021 — Quantitative Aptitude Questions with Answers
All 70 Quantitative Aptitude previous-year questions from RBI GRADE B 2021, each with the correct answer and a full explanation. Practise them as a free, timed mock test with instant scoring.
Practice Quantitative Aptitude as a timed test →- Q1.Quantitative Aptitude
[DI Table: items sold by stores A(500,32%,100AC) B(800,48%,96AC) C(1200,45%,240AC) D(1500,56%,300AC)] Total ovens sold by C & D together is what percent less than total refrigerators sold by A & D together?
- a)16%
- b)24%
- c)22%
- d)26%
- e)18%
- Q2.Quantitative Aptitude
[DI Table stores] Difference between the average number of ovens sold by B & D and the total refrigerators sold by C.
- a)260
- b)240
- c)250
- d)150
- e)200
- Q3.Quantitative Aptitude
[DI Table stores] If refrigerators sold by store X is 25% more than by D, and ovens sold by X is 37.5% more than ovens sold by A, find total refrigerators & ovens sold by X.
- a)780
- b)1480
- c)1180
- d)1280
- e)1380
- Q4.Quantitative Aptitude
[DI Table stores] Ratio of total AC's sold by C & D together to total AC's & refrigerators sold by B.
- a)8 : 9
- b)9 : 8
- c)9 : 7
- d)4 : 3
- e)6 : 5
- Q5.Quantitative Aptitude
[DI Table stores] Total refrigerators sold by A & C together are what percent more than total ovens sold by C?
- a)63 2/3%
- b)60 2/3%
- c)33 1/3%
- d)66 2/3%
- e)69 2/3%
- Q6.Quantitative Aptitude
I. x^2 - 6x + 8 = 0 II. y^2 + 8y + 15 = 0
- a)x >= y
- b)x > y
- c)x <= y
- d)x < y
- e)x = y or no relation can be established between x and y
- Q7.Quantitative Aptitude
I. x^2 - 12x + 32 = 0 II. y^2 - 17y + 72 = 0
- a)x >= y
- b)x > y
- c)x <= y
- d)x < y
- e)x = y or no relation can be established between x and y
- Q8.Quantitative Aptitude
I. x^2 - 12x + 35 = 0 II. y^2 - 11y + 24 = 0
- a)x >= y
- b)x > y
- c)x <= y
- d)x < y
- e)x = y or no relation can be established between x and y
- Q9.Quantitative Aptitude
I. 8x^2 + 10x - 7 = 0 II. y^2 - 6y + 8 = 0
- a)x >= y
- b)x > y
- c)x <= y
- d)x < y
- e)x = y or no relation can be established between x and y
- Q10.Quantitative Aptitude
I. x^2 + 7x + 12 = 0 II. y^2 + 15y + 44 = 0
- a)x >= y
- b)x > y
- c)x <= y
- d)x < y
- e)x = y or no relation can be established between x and y
- Q11.Quantitative Aptitude
[DI Line chart: graduate & postgraduate students in colleges A-E (chart image)] Total students (grad+PG) in college A are what percent more/less than total postgraduate students in colleges B & E together?
- a)80%
- b)30%
- c)50%
- d)20%
- e)60%
- Q12.Quantitative Aptitude
[DI Line chart colleges] If boys:girls in graduate & PG students in college C is 3:2 & 5:3, find ratio of total boys (grad+PG) in C to total graduate students in college B.
- a)7 : 5
- b)23 : 15
- c)3 : 2
- d)21 : 13
- e)4 : 3
- Q13.Quantitative Aptitude
[DI Line chart colleges] Total graduate students in colleges C & E together are what percent of total (grad+PG) students in college D?
- a)233 1/3%
- b)266 2/3%
- c)250%
- d)225%
- e)275%
- Q14.Quantitative Aptitude
[DI Line chart colleges] If graduate students in college X are 90 more than in E, and boys:girls in graduate students in B & X are 11:9 and 3:7, find number of girls in graduate students in B & X together.
- a)145
- b)128
- c)134
- d)166
- e)None of the above
- Q15.Quantitative Aptitude
[DI Line chart colleges] The average number of PG students in colleges B, C & D is how much more/less than graduate students in colleges A & E together?
- a)10
- b)20
- c)30
- d)50
- e)40
- Q16.Quantitative Aptitude
A man spent 20% of monthly income on rent, 20% of remaining on food. Of the remaining, clothing:saving = 7:9 and difference between food and clothing is Rs.1080. Find income for nine months.
- a)Rs. 81000
- b)Rs. 70000
- c)Rs. 68000
- d)Rs. 96000
- e)Rs. 108000
- Q17.Quantitative Aptitude
Ratio of speed of boat in still water to stream is 8:5; total time to cover D km downstream and upstream is 32 hours. Find time to cover 2D km in still water.
- a)15.5 hours
- b)21.5 hours
- c)19.5 hours
- d)17.5 hours
- e)16.5 hours
- Q18.Quantitative Aptitude
Length of train A is 200 m and B is 'l' m; they cross a pole in 8 sec and 26 sec. Find time for A to cross B in opposite direction if speed ratio A:B = 5:4.
- a)18 sec
- b)20 sec
- c)24 sec
- d)12 sec
- e)16 sec
- Q19.Quantitative Aptitude
Article A marked up 60% above CP and sold at 25% discount; profit = Rs.475. CP of B is 40% more than A and profit same. Find SP of B.
- a)Rs.3300
- b)Rs.3600
- c)Rs.3000
- d)Rs.3800
- e)Rs.4200
- Q20.Quantitative Aptitude
16 men and 14 women complete a work in 30 days. With four more men they finish 80% of the same work in 20 days. Find time for 42 women to complete two times the work.
- a)60 days
- b)50 days
- c)80 days
- d)120 days
- e)100 days
- Q21.Quantitative Aptitude
[DI: store sold Jackets/Sweaters/Sweatshirts in Adidas & Nike; data in text] Difference between total Adidas and Nike items sold by store.
- a)160
- b)120
- c)180
- d)260
- e)140
- Q22.Quantitative Aptitude
[DI Jackets/Sweaters/Sweatshirts] Total Adidas Sweaters are what percent less than total Nike Jackets sold by store?
- a)8%
- b)12.5%
- c)12%
- d)10%
- e)17.5%
- Q23.Quantitative Aptitude
[DI Jackets/Sweaters/Sweatshirts] Average number of Adidas brand items sold by store.
- a)120
- b)90
- c)110
- d)80
- e)130
- Q24.Quantitative Aptitude
[DI Jackets/Sweaters/Sweatshirts] Ratio of total Adidas Sweatshirts to total Nike brand of all three items sold by store.
- a)17 : 14
- b)12 : 17
- c)7 : 17
- d)13 : 17
- e)14 : 17
- Q25.Quantitative Aptitude
[DI Jackets/Sweaters/Sweatshirts] Total Adidas Sweatshirts are what percent more than total Nike Sweaters sold by store?
- a)160%
- b)180%
- c)200%
- d)140%
- e)120%
- Q26.Quantitative Aptitude
Find the missing number: 33, 36, 44, 59, ?, 118
- a)85
- b)83
- c)81
- d)87
- e)91
- Q27.Quantitative Aptitude
Find the missing number: 162, 125, 94, 65, ?, 23
- a)42
- b)38
- c)40
- d)41
- e)43
- Q28.Quantitative Aptitude
Find the missing number: 2, 15, 64, 195, ?, 393
- a)381
- b)387
- c)392
- d)389
- e)385
- Q29.Quantitative Aptitude
Find the missing number: 322, ?, 82, 42, 22, 12
- a)172
- b)165
- c)164
- d)158
- e)162
- Q30.Quantitative Aptitude
Find the missing number: 8, 5, 6, 13, 53, ?
- a)427
- b)425
- c)421
- d)423
- e)429
- Q31.Quantitative Aptitude
P and Q start a business; Q's investment is 25% more than P's. After six months P doubles his investment and Q withdraws 1/3rd. If total annual profit is Rs.12200, find P's profit share.
- a)7200 Rs.
- b)5000 Rs.
- c)7800 Rs.
- d)5600 Rs.
- e)8400 Rs.
- Q32.Quantitative Aptitude
Rs.P invested in scheme X at 20% p.a. CI for two years; the amount then invested in scheme Y at 5% p.a. SI for 2 years. Interest from Y is what percent of interest from X?
- a)40.72%
- b)36.72%
- c)39.72%
- d)16.36%
- e)32.72%
- Q33.Quantitative Aptitude
Four years ago, age of A was six years more than half of B's age then. Eight years hence average age of A & B will be 42. Find ratio of ages of A to B two years hence.
- a)5 : 6
- b)7 : 12
- c)5 : 7
- d)7 : 9
- e)3 : 4
- Q34.Quantitative Aptitude
In a vessel milk:water = 5:2. 42 L of mixture removed and 32 L water added; new ratio 7:6. Find initial quantity of mixture.
- a)84 liters
- b)98 liters
- c)126 liters
- d)154 liters
- e)140 liters
- Q35.Quantitative Aptitude
Ratio of radii of circles X & Y is 3:4; sum of circumference of X and diameter of Y is 188 cm. If ratio of side of a square to sum of radii of X & Y is 8:7, find perimeter of the square.
- a)200 cm
- b)208 cm
- c)216 cm
- d)224 cm
- e)232 cm
- Q36.Quantitative Aptitude
[DI Bar graph: % of CDs ordered & % sold by shopkeepers A-D; total ordered = 600 (chart image)] Total unsold CDs by A & D together are how much more than total sold CDs by C?
- a)126
- b)132
- c)128
- d)116
- e)118
- Q37.Quantitative Aptitude
[DI Bar graph CDs] If CDs sold by E are 125% more than CDs sold by B and E sold 27% of total ordered CDs, find total CDs ordered by E are what percent more than total ordered by C.
- a)36%
- b)15%
- c)30%
- d)20%
- e)25%
- Q38.Quantitative Aptitude
[DI Bar graph CDs] Find the average number of unsold CDs by B, C & D.
- a)120
- b)100
- c)80
- d)110
- e)72
- Q39.Quantitative Aptitude
[DI Bar graph CDs] Find ratio of total CDs sold by A & D together to total CDs sold by B.
- a)5 : 3
- b)3 : 5
- c)5 : 4
- d)5 : 6
- e)4 : 5
- Q40.Quantitative Aptitude
[DI Bar graph CDs] If CDs ordered by X is 100% more than total unsold CDs by D and X sold 30% of total ordered, find unsold CDs by X are what percent of unsold CDs by A.
- a)105%
- b)110%
- c)100%
- d)96%
- e)90%
- Q41.Quantitative Aptitude
I. x^2 - 7x + 10 = 0 II. y^2 - 2y - 3 = 0
- a)x > y
- b)x >= y
- c)x < y
- d)x <= y
- e)x = y or the relationship cannot be established
- Q42.Quantitative Aptitude
I. x^2 - 24x + 143 = 0 II. y^2 - 29y + 210 = 0
- a)x > y
- b)x >= y
- c)x < y
- d)x <= y
- e)x = y or the relationship cannot be established
- Q43.Quantitative Aptitude
I. x^2 + 22x + 117 = 0 II. y^2 + 23y + 132 = 0
- a)x > y
- b)x >= y
- c)x < y
- d)x <= y
- e)x = y or the relationship cannot be established
- Q44.Quantitative Aptitude
I. 2x^2 - 3x - 20 = 0 II. 2y^2 + 11y + 15 = 0
- a)x > y
- b)x >= y
- c)x < y
- d)x <= y
- e)x = y or the relationship cannot be established
- Q45.Quantitative Aptitude
I. x^2 - 12x + 32 = 0 II. y^2 - 20y + 96 = 0
- a)x > y
- b)x >= y
- c)x < y
- d)x <= y
- e)x = y or the relationship cannot be established
- Q46.Quantitative Aptitude
A boat travels upstream. If upstream speed is decreased by 40% it equals the speed of current; speed of boat in still water is 240 km/hr. Find upstream speed of boat (km/hr).
- a)120
- b)180
- c)150
- d)210
- e)125
- Q47.Quantitative Aptitude
Rs.X at 15% SI and Rs.2X at 8% CI (annual) for two years. Difference between SI and CI after two years is Rs.820. Find X.
- a)Rs.25000
- b)Rs.30600
- c)Rs.28600
- d)Rs.22200
- e)Rs.26200
- Q48.Quantitative Aptitude
Length of train A is 400 m and B is 'x' m more than A. Speeds equal; they cross a pole in 16 and 24 sec. In what time will train B cross a 400 m platform?
- a)32 sec
- b)40 sec
- c)45 sec
- d)54 sec
- e)24 sec
- Q49.Quantitative Aptitude
A is 40% less efficient than B, who does the same work in 20% less time than C. A and B together complete 80% of work in 12 days. In how many days can B and C together complete 60% of work?
- a)2 days
- b)4 days
- c)6 days
- d)8 days
- e)10 days
- Q50.Quantitative Aptitude
Perimeter of a rectangle equals perimeter of a square whose area is 400 cm^2; length of rectangle is 40% more than side of the square. Find the area of the rectangle.
- a)248 cm^2
- b)420 cm^2
- c)356 cm^2
- d)336 cm^2
- e)348 cm^2
- Q51.Quantitative Aptitude
CP of a jeans is 32.5% more than CP of a shirt; CP of jeans increased by 30% and sold at Rs.4134 at 25% profit. If shirt marked up 15% above CP, find marked price of shirt (Rs.).
- a)2200
- b)2208
- c)2280
- d)2820
- e)2082
- Q52.Quantitative Aptitude
In first mixture, milk was 6 L more than water. After adding 40 L of a second mixture (water:milk 3:5), ratio of water:milk becomes 9:13. Find total quantity of water in the final mixture.
- a)27 ltr
- b)31.5 ltr
- c)36 ltr
- d)45 ltr
- e)None of these
- Q53.Quantitative Aptitude
A and B start a business with Rs.8000 and Rs.10000. A leaves after 5 months. A gets 20% of total profit for managing and remaining is split by profit sharing. If A gets total Rs.2500, find total profit of A and B together.
- a)10,000
- b)8,500
- c)7,500
- d)6,250
- e)5,750
- Q54.Quantitative Aptitude
Salary Rs.50000/month; spends 20% on rent, 10% of remaining on bills, 20% of further remaining on miscellaneous. Remaining split between wife and mutual funds in ratio 5:4. Amount spent on rent is how much less/more than amount invested in mutual funds?
- a)2800 Rs.
- b)2400 Rs.
- c)2600 Rs.
- d)3200 Rs.
- e)3000 Rs.
- Q55.Quantitative Aptitude
Bag 1: 7 red, 4 white, 3 green. Bag 2: 5 red, 6 yellow, 3 blue. A bag is chosen at random and a ball drawn. Find the probability the ball is red.
- a)1/7
- b)3/7
- c)2/7
- d)1
- e)6/7
- Q56.Quantitative Aptitude
[DI Table: male visitors & % female visitors Sun(120,76%) Mon(280,30%) Tue(500,37.5%) Wed(420,40%)] Total female visitors on Sunday & Monday is how much more/less than on Tuesday & Wednesday together?
- a)160
- b)140
- c)120
- d)100
- e)80
- Q57.Quantitative Aptitude
[DI Table visitors] Total visitors on Wednesday are what percent more than total visitors on Sunday?
- a)60%
- b)20%
- c)40%
- d)80%
- e)50%
- Q58.Quantitative Aptitude
[DI Table visitors] Male visitors on Friday are 25% more than Monday's; female visitors on Friday are 40% more than total visitors on Tuesday. Find total visitors on Friday.
- a)1470
- b)1050
- c)1620
- d)1200
- e)1170
- Q59.Quantitative Aptitude
[DI Table visitors] Total visitors on Wednesday is how much more than total female visitors on Sunday and Monday together?
- a)300
- b)200
- c)250
- d)350
- e)150
- Q60.Quantitative Aptitude
[DI Table visitors] If one guide is required per five visitors each day, find total guides required for all four days.
- a)240
- b)480
- c)220
- d)440
- e)460
- Q61.Quantitative Aptitude
Find the wrong number: 5, 18, 34, 54, 79, 110, 158
- a)34
- b)5
- c)18
- d)54
- e)158
- Q62.Quantitative Aptitude
Find the wrong number: 112, 128, 108, 132, 104, 134, 100
- a)112
- b)128
- c)134
- d)108
- e)100
- Q63.Quantitative Aptitude
Find the wrong number: 5, 6, 14, 45, 184, 920, 5556
- a)5
- b)6
- c)14
- d)920
- e)45
- Q64.Quantitative Aptitude
Find the wrong number: 10, 22, 35, 50, 68, 92, 117
- a)92
- b)117
- c)10
- d)22
- e)35
- Q65.Quantitative Aptitude
Find the wrong number: 64, 34, 36, 56, 114, 287, 860
- a)114
- b)860
- c)64
- d)36
- e)56
- Q66.Quantitative Aptitude
[DI: 450 students, sections A & B, streams Art/Science/Commerce; percentages in text] Total students in Art in A is what percent more than total students in Science in B?
- a)75%
- b)70%
- c)90%
- d)100%
- e)110%
- Q67.Quantitative Aptitude
[DI students streams] Ratio of total students in Commerce in B to total students in Science in A.
- a)8 : 15
- b)8 : 17
- c)8 : 13
- d)8 : 11
- e)8 : 9
- Q68.Quantitative Aptitude
[DI students streams] If section C has 180 students and Science in C is 25% more than Commerce in B, find how much less total Art & Commerce in C is than total Art & Commerce in A.
- a)55
- b)60
- c)65
- d)45
- e)35
- Q69.Quantitative Aptitude
[DI students streams] Find the average number of students in Science in A & B.
- a)125/2
- b)135/2
- c)120
- d)130
- e)145
- Q70.Quantitative Aptitude
[DI students streams] If in Art of A & B boys:girls is 5:3 and 7:4, find total boys in Art from both sections.
- a)125
- b)135
- c)145
- d)115
- e)105
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Quantitative Aptitude — other years
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