Pump tank emptying

Three identical pumps empty the tank in 1.8 hours. How long will it take 5 pumps to empty this tank?

Final Answer:

t5 =  1.08 h

Step-by-step explanation:

t3=1.8 h t1=3 t3=3 1.8=527=5.4 h  t5=t1/5=5.4/5=1.08 h



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