SOLUTION: Water is pouring into a tank at a constant rate. When the tank is full, 10 pumps of equal capacity empty the tank in 12 hrs, while 15 pumps of the same capacity empty the tank in

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Question 821463: Water is pouring into a tank at a constant rate. When the tank is full, 10 pumps of equal capacity empty the tank
in 12 hrs, while 15 pumps of the same capacity empty the tank in 6 hrs. The time which 25 pumps of the same
capacity take to empty the tank, if the tank is initially full, will be : (All the pipes pouring water into the tank are
always open)

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
10*12= 5*2*6*2=120 pump hours
15*6=5*3*6=90 pump hours
something is wrong with the pumps or some are filling and some are emptying
if they are all of the same capacity, the pump hours should be the same.