Daily Quiz / QUANTS PRACTICE TESTS / Banking and SSC/RRB 2022 - Quants Practice Test -15.09.2022

Banking and SSC/RRB 2022 - Quants Practice Test -15.09.2022

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Q.1) P invested y and Q invested (y + 600) and P and Q invested for 8 months and 10 months respectively and the profit obtained by P is 4/7th of the profit obtained by Q. Find the sum of the investment of P and Q.
(y × 8)/(y + 600) × 10 = 4/7

7y = 5y + 3000

y = 1500

Required sum = 1500 + 1500 + 600

= 3600
Q.2) The ratio of efficiency of Pipe P, Pipe Q and Pipe R is 6 : 4 : 3. Pipe P and Pipe Q are inlet pipes and Pipe R is an outlet pipe and Pipe R alone can empty the tank in 80 minutes. Pipe P, Pipe Q, Pipe R and Pipe S together can fill the tank in 20 minutes. Find the time taken by Pipe S alone to fill the tank.
Ratio of the time taken by Pipe P, Pipe Q and Pipe R = 1/6 : 1/4 : 1/3 = 2 : 3 : 4

Time taken by Pipe P alone = 2 × 80/4 = 40 minutes

Time taken by Pipe Q alone = 3 × 80/4 = 60 minutes

1/P + 1/Q – 1/R + 1/S = 1/20

1/40 + 1/60 – 1/80 + 1/S = 1/20

7/240 + 1/S = 1/20

1/S = 1/20 – 7/240 = (12 – 7)/240 = 5/240 = 1/48

= 48 minutes
Q.3) Ramesh has 128 litres of a mixture of alcohol and water in the ratio of 5 : 3. If he sold 32 litres of the mixture and x quantity of water added to the mixture, then now the quantity of alcohol and water becomes 10 : 7. Then find the value of x.
Alcohol in 128 litres = 128 × 5/8 = 80 litres

Water in 128 litres = 128 × 3/8 = 48 litres

Alcohol in 32 litres = 32 × 5/8 = 20 litres

Water in 32 litres = 32 × 3/8 = 12 litres

(80 – 20)/(48 – 12 + x) = 10/7

60 × 7 = 10 × (36 + x)

420 = 360 + 10x

10x = 60

x = 6 litres
Q.4) A woman is standing on a platform and Train P passes her in 22.5 seconds and the same train passes the platform of length 250m in 35 seconds. If the speed of Train Q is 16 m/s and the time taken by Train P and Train Q crosses each other travelling in opposite direction is 20 seconds, find the length of Train Q.
Length of Train P = x

x/22.5 = (x + 250)/35

7x = 4.5x + 1125

2.5x = 1125

x = 450

Speed of Train P = 450/22.5 = 20 m/s

Length of Train Q = y

(450 + y)/(20 + 16) = 20

450 + y = 720

y = 270
Q.5) Area of the equilateral triangle is 100√3 cm2 and the radius of the circle is 8 cm more than the side of the equilateral triangle. Find the area of the circle.
Area of the equilateral triangle = 100√3

√3/4 × a2 = 100√3

a2 = 4 × 100

a = 20m

Radius of the circle = 20 + 8 = 28 cm

Area of the circle = πr2 = 22/7 × 28 × 28

= 2464 cm2
Q.6) Directions (Q. 6 – 10) : Find out the missing number in the following number series.



6, 8, 19, ?, 249, 1251
6 × 1 + 2 = 8

8 × 2 + 3 = 19

19 × 3 + 4 = 61

61 × 4 + 5 = 249

249 × 5 + 6 = 1251
Q.7) 5, 8, 21, 80, 395, ?
5 × 2 – 2 = 8

8 × 3 – 3 = 21

21 × 4 – 4 = 80

80 × 5 – 5 = 395

395 × 6 – 6 = 2364
Q.8) 4912, 2196, ?, 342, 124, 26
173 – 1 = 4912

133 – 1 = 2196

113 – 1 = 1330

73 – 1 = 342

53 – 1 = 124

33 – 1 = 26
Q.9) 6, 9, ?, 45, 135, 472.5
6 × 1.5 = 9

9 × 2 = 18

18 × 2.5 = 45

45 × 3 = 135

135 × 3.5 = 472.5
Q.10) 3, 2.5, 0.5, ?, 3.5, 13.75
3 × 0.5 + 1 = 2.5

2.5 × 1 – 2 = 0.5

0.5 × 1.5 + 3 = 3.75

3.75 × 2 – 4 = 3.5

3.5 × 2.5 + 5 = 13.75