SOLUTION: A pool can be filled with water in 10 hours Draining the pool requires 20 hours If the pool is empty and the drain is open how much time will be needed to fill the pool? 10,15, or
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Question 314515: A pool can be filled with water in 10 hours Draining the pool requires 20 hours If the pool is empty and the drain is open how much time will be needed to fill the pool? 10,15, or 20 hours?
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
A pool can be filled with water in 10 hours Draining the pool requires 20 hours If the pool is empty and the drain is open how much time will be needed to fill the pool? 10,15, or 20 hours?
.
Let x = time to fill pool
then
x(1/10 - 1/20) = 1
multiplying both sides by 20:
x(2 - 1) = 20
x(1) = 20
x = 20 hours
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