Question 1141341
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The question as posed can't be answered, because there is nothing that tells us how long it takes to fill the pool if the drain is closed.<br>
The response from the other tutor assumes the rate of filling is the same as the rate of draining; in that case of course the pool would never get filled.<br>
And of course if the rate of filling is less than the rate of draining, then the pool will never get filled; any water that is added will drain immediately.<br>
But if the rate of filling is greater than the rate of draining, then water will accumulate, and eventually the pool will get filled.<br>
But the number of hours that will take depends on the filling rate.