Question

13. A pipe can fill a tank in 12 hours. By mistake, a waste pipe
opened and the tank is filled in 16 hours. If the tank is full, how much time will the
om is les
1
1
1
waste pipe take to empty it?
[Hint. Portion of the tank emptied by the waste pipe in one hour =
12
16
48​

Answer 1

Answer:

48hrs

Explanation:

work done to fill in 1 hr = $\frac{1}{12}$

work done to empty in 1 hr is $\frac{1}{16}$

work done to leak in 1 hr = $\frac{1}{12} -\frac{1}{16} = \frac{1}{48}$

total time taken for leak = 48hrs