A tap can fill a tank in 6hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?

A tap can fill a tank in 6hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?

A 3hrs 15min

B 3hrs 45 min

C 4hrs

D 4hrs 15min

Solution

Correct Answer: Option B