Quantitative Aptitude

Quant Quiz

Directions (Q.1-3): What should come is place of question mark (?) in the following number series?

(1)66    64.5 60.8         54.9      47.79    38.66 27.51 ?

1) 16.44

2) 15.54

3) 14.34

4) 13.24

5) 12.14

(2)4         104      1320  12204          85876 ?

1) 419380

2) 429880

3) 439780

4) 449580

5) 439880

(3)24.5 32.2       39.9        47.6          55.3   ?

1) 59.9

2) 59.7

3) 58.3

4) 57.7

5) 56.7

(4)Two pipes can separately fill a tank in 20 hrs and 30 hrs respectively. Both the pipes are opened to fill the tank but when the tank is one-third full a leak develops in the tank through which one-third of the water supplied by both the pipes leaks out. What is the total time taken to fill the tank?

1) 12 hrs

2) 18 hrs

3) 26 hrs

4) 14 hrs

5) None of these

(5)Prices register an increase of 10% on foodgrains and 15% on other items of expenditure. If the ratio of expenditure of an employee on foodgrains and other items be 2 : 5, by how much should his salary be increased in order that he may  maintain the same level of consumption as before? Assume that there is no saving out of his monthly salary of Rs. 2590.

1) 13.57%

2) 12%

3) 13%

4) 18.42%

5) None of these

(6)A reduction of 20% in the price of sugar enables a person to get 5.2 kg more sugar for Rs. 130. Find the original price of sugar per kg.

1) Rs. 5

2) Rs. 6.25

3) Rs. 6

4) Rs. 7.50

5) None of these

(7)Ashok had taken some loan from Mukesh on simple interest of 22% per annum. After 3 years he returned the loan and the interest paying Rs. 33200. How much interest did he pay?

1) Rs. 12200

2) Rs. 13500

3) Rs. 13200

4) Rs. 1320

5) None of these

(8)A train takes 1 second to cross a pole and 3 seconds to cross a platform 300 m long. Find the length of the train.

1) 250 m

2) 300 m

3) 125 m

4) 150 m

5) None of these

(9)What will be the percentage profit after selling an article at a certain price if there is a loss of 45% when the article is sold at one-third of the previous selling price?

1) 45%

2) 60%

3) 55%

4) Can’t say

5) None of these

(10)A bag contains 8 white and 9 black balls. Balls drawn one by one. Two draws of one ball each are made without replacement. What is the probability that one is white and other is black?

1) 8/15

2) 1/17

3) 8/17

4) 1/15

5) 9/17

Answers:

1. (3);
66-1.5=64.5, 64.5-3.7=60.8

60.8-5.9=54.9, 54.9-7.11=47.79-9.13=38.66, 38.66-11.15=27.51, 27.515-13.17=14.34

2. (2); 

(4+2^2)X13=104

(104+4^2)X11=1320

(1320+6^2)X9=12204

(12204+8^2)X7=85876

(85876+10^2)X5=429880

3. (5); 

7X3.5=24.5

7X4.6=32.2

7X5.7=39.9

7X6.8=47.6

7X7.9=55.3

7X8.1=56.7

4. (5);

Let total copacity of pipe=60

efficiency of 1st pipe=3

and effficiency of IInd pipe=2

i.e. 1/3rd part of tank fill in [(1/3)60]/5=4 hr

Remaining time=(4+12 hr)=16 hr

5. (1);
Required Ans.=(10X2+15X5)/(5+7)=13.57

6. (2);
20% of 130=5.2 kg.

1 kg.=26/5.2=5

Original price=5X100/80=6.25

7. (3)
166%=33200

66%=(33200/166)X66=13200

8. (4);
(T+P)/x=3

T/x=1

(T+300)/(T)=3/1

T=150

9. (5)

Let CP=100

1/3 of SP=55

SP = 165

P%=165 - 100 =65%

10. (5)

P=(8C1X9C1)/(17C2)=9/17