Question

8 pipes are required to fill a tank in 2 hours. How long will it take if 6 pipes are used

Answer 1

Answer:

96 minutes

Explanation:

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  

⇒  5 80×6 ​  =x

⇒x=96  

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

Hope it helps...

Answer 2

One pipe can fill in = 8*2=16

Fie can fill in = 16/5 hr or 3hr 20mins

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