Aptitude - Chain Rule - Discussion

Discussion Forum : Chain Rule - General Questions (Q.No. 1)

Chain Rule

3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?

Answer: Option

Explanation:

Let the required number of working hours per day be x.

More pumps, Less working hours per day (Indirect Proportion)

Less days, More working hours per day (Indirect Proportion)

Pumps	4	:	3		:: 8 : x
Days	1	:	2		:: 8 : x

4 x 1 x x = 3 x 2 x 8

x =	(3 x 2 x 8)
	(4)

x = 12.

Discussion:

69 comments Page 7 of 7.

Juana maria said: 4 years ago

Thanks all. This helped me a lot.

(3)

Ankit said: 9 years ago

Math master's solution is great.

Neha said: 1 decade ago

Why are you 16*3 for 1 pump?

Nikhilkuruli said: 1 decade ago

@Akhilesh sahu: 27 hours.

Kartik said: 1 decade ago

Thanks to mathmaster.

Umesh behera said: 4 years ago

Thank you everyone.

(9)

Sivakumar said: 1 decade ago

a:b::c:d=>bc=ad

Sudheer said: 1 decade ago

Imraz said well.

Naresh said: 1 decade ago

Thanks mehar.

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