Question

Two pipes can fill a tank in 15 and 20
hours respectively. The pipes are opened
simultaneously and it is found that due to the
leakage in the bottom, 17/7 hours extra are
taken extra to fill the tank. If the tank is full, in
what approximate time would the leak empty
it?
a) 27 hrs
b) 39 hrs
c) 32 hrs
d) 36 hrs
e) None of these​

Answer 1

Answer:

Option B is correct......