Question of the Day

September 24, 2014 achieverspointniteesh Ivy Zone

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

A. 10 hrs per day
B. 12 hrs per day

C. 8 hrs per day

D. 15 hrs per day

E. 20 hrs per day


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