# What is the total time taken to fill the tank completely?

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

- 3hrs. 45 min
- 3 hrs 15 min
- 4 hrs. 15 min
- 4 hrs.

**Answer: (1) 3 hrs. 45 min.**

**Explanation:-**

A tap can fill a tank = 6 hours

Therefore, a tap can fill half the tank = 6/2 = 3 hours

Three more similar taps are opened,

Then, time taken by four taps = 3 x 60/4

= 45 min

Then, the total time taken to fill the tank complete = 3 hrs. 45 min.

Hence, correct answer is option (1) 3 hrs. 45 min.