Question

A Tank is normally filled in 9 hours but takes four hours longer to fill because of a leak in its bottom. If the tank is full, the leak will empty it in ?
A) 32.5 hrs
B) 29.25 hrs
C) 30.30 hrs
D) 31 hrs

Answer 1

Q:

A Tank is normally filled in 9 hours but takes four hours longer to fill because of a leak in its bottom. If the tank is full, the leak will empty it in ?

A) 32.5 hrs
B) 29.25 hrs
C) 30.30 hrs
D) 31 hrs

Answer:   B) 29.25 hrs 

Explanation:

Let the leak will empty the tank in x hrs 

Then, 1/9 - 1/x = 1/13

x = 29.25 hrs

Answer 2

Hai,

the correct answer is options B

I hope it's help you