Question 138
A pump can fill a tank with water in 2 hours. Because of a leak, it took 2$$\frac{1}{3}$$ hours to fill the tank. The leak can drain all the water of the tank in
Solution
Part of tank emptied in 1 hour by the
leak
$$\frac{1}{2}$$ - $$\frac{2}{7}$$ = $$\frac{1}{14}$$
The leak will empty the tank in 14 hours.
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