Question

Two taps a and b can fill a tank in 5 hours and 20 hours respectively. It both the taps are open then due to a leakage, it took 30 minutes more to fill the tank. If the tank is full, how long will it take for the leakage alone to empty the tank? 412hrs412hrs b. 9 hrs9 hrs c. 18 hrs18 hrs d. 36 hrs

Answer 1

Ans (d) 36 hrs

2 taps can fill in 4 hrs

With leak it will take 4 1/2 hrs

now leak can empty in 1/4-1/(4 (1/2))

1/4-8/9=1/36. so it an empty tank in 36 hrs

Answer 2

Step-by-step explanation:

option d is the correct answer

36 hours.