Previous year questions asked in DMRC CRA exam

Quant section :  All these questions were asked in DMRC CRA exam.

1.    An outlet pipe can empty a cistern in 3 hrs. In what time will the pipe empty 2/3part of the cistern?

(1)   3 hours

(2)   5 hours

(3)   2 hours

(4)   4 hours

2.     Two pipes can fill up a tank in 30 minutes and 40 minutes respectively and another pipe can empty the full tank in 20 minutes. If all the pipes are opened when the tank is half full then time required to fill the tank will be:

(1)   1 hour

(2)   2 hours

(3)   3 hours

(4)   2 hours & 30 minutes

3.    Ramesh is walking at a speed of 10 kilometers per hour. After every kilometer he takes rest for 5 minutes. The time taken to cover a distance of 5 kilometers by Ramesh is:

(1)   30 minutes

(2)   35 minutes

(3)   50 minutes

(4)   55 minutes

4.    A bag contains 3 blue, 2 green and 5 red balls. If four balls are picked at random, what is the probability that two are green and two are blue?

(1)	1/18	(2)	1/70
(3)	3/5	(4)	1/2

5.    If 2^m – 2^m–1 – 4 = 0, then the value of m^m will be?

(1)	4		(2)	27
(3)	6	(4)		3

6.    An officer was appointed on maximum daily wages on a contract money of Rs. 4,956/-. But on being absent for some days, he was paid Rs. 3894/-. For how many days was he absent?

(1)	3		(2)	4
(3)	2		(4)	None ofthese

7.    Two vessels A and B contain acid and water mixed in the ratio 2:3 and 4:3. In what ratio must these mixtures be mixed to form a new mixture containing half acid and half water?

(1)	3:5	(2)	5:7
(3)	1:2	(4)	7:3

8.    Five years ago, the age of a man was seven times the age of his son. The age of the man will be three times the age of his son in five years from now. The present age of the man and his son, respectively are:

(1)   56 years and 14 years

(2)   68 years and 16 years

(3)   40 years and 10 years

(4)   50 years and 15 years

9 If a 30 m ladder is placed against a 15 m wall such that it just reaches the top of the wall, then the elevation of the wall is equal to

(1)	45°	(2)	30°
(3)	60°	(4)	50°

10. 96.    The marks of six boys in a group are 48, 59, 87, 37, 78 and 57. What are the average marks of all six boys?

(1)   61

(2)   65

(3)   69

(4)   None of these

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