# How Many Tap can Fill Tank in the 15 Minutes? If

Having the same capacity 9 taps fill up a water tank in 20 minutes. How many taps of the same capacity required to fill up the same water tank in 15 minutes?

- 10
- 12
- 15
- 18

**Answer: (2) 12**

**Explanation:-**

**Formula-**

T_{1}N_{1} = T_{2}N_{2
}Where, T = time and N = number of taps

Then, T_{1} = 20 minutes, N_{1} = 9, T_{2} = 15 minutes and N_{2} = ?

9 x 20 = 15 x N_{2
}N_{2} = 9 x 20/15

N_{2} = 12

Hence, the answer (2) 12.