Two water 2

Two water pumps can fill a water tank in 20 minutes. How many minutes will four pumps take to fill the tank at the same rate?

Correct answer:

t2 =  10 min

Step-by-step explanation:

n1=2 t1=20 min n2=4  t1 n1=t2 n2 t2=t1 n2n1=20 42=420 2=440=10 min

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