Asked by keekee
Pump A alone can empty the city pool in 12 hours. If only pump B is used, it takes 24 hours to empty the pool. How long would it take to drain the pool if both pumps were used together?
Answers
Answered by
Damon
A 1/12 pool / hr
B 1/24 pool / hr
together 3/24 pool/hr
so 24/3 = 8 hr/pool
B 1/24 pool / hr
together 3/24 pool/hr
so 24/3 = 8 hr/pool
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