Question

6 pipes fill a tank in 120 minutes, then 5 pipes will fill it in
(b) 144 min
(c) 140 min
(a) 100 min
(d) 108 min
with solution​

Answer 1

If,

Time taken by 6 pipes to fill a tank = 120 mins

Then,

Time taken by 1 pipe to fill a tank = 120/6 = 20 mins

So,

Time taken by 5 pipes to fill a tank = 20×5 = 100 mins

Answer:

Hence, answer is a) 100 mins. 5 pipes can fill a tank in 100 minutes