Tributaries 70734

The pool would fill with three identical tributaries in 52 hours. After 20 hours, two more inlets were added. How many hours did the pool fill up?

Correct answer:

t =  39.2 h

Step-by-step explanation:

3 52=3 20+(3+2) (t20)  5t=196  t=5196=39.2=39.2 h

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