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?

Question

Accepted Answer

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

⟹ x =	(3 x 2 x 8)
	(4)

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?

Discussion & Comments