Question

6 pipes are required to fill a tank in 1 hour 20 minutes. How long will it take, if only 5 pipes of the same type are used. ​

Answer 1

Answer::

Let the desired time to fill the tank be x minutes.

In 80 mins a tank is filled by 6 pipes

Lesser the number of pipes more will be the time required by it to fill the tank.

So, this is a case of inverse proportion.

Hence, 80 × 6 = x × 5

⇒ 80×6/5 = x

⇒x = 96

Thus, the time is taken to fill the tank by 5 pipes is 96 minutes or 1 hour 36 minutes

Answer 2

The Answer is in Attachment

Hope it Help you