DRDO Multi tasking staff Model paper 1

As per given, 6 taps fill the tank in 36 min
⇒ 1 tap fill the tank in 6 × 36 min
Now let x taps fill up the tank in 8 min
⇒ 1 tap will fill up the tank in x × 8 min
⇒ 6 × 36 = x × 8
⇒ x = (2 × 3 × 4 × 9)/8 = 27 taps