Question

A tank can be filled by 5 pipes in 80 minutes . How long it will take to fill the tank by 8 pipes of same size

Answer 1

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Answer 2

Question :

A tank can be filled by 5 pipes in 80 minutes . How long it will take to fill the tank by 8 pipes of same size ?

Answer :

Time it will take to fill the tank by 8 pipes of same size is 50mins.

Given :

No.of pipes = 5

Time taken to fill up the tank = 80mins

To find :

Time it will take to fill the tank by 8 pipes of same size

Solution :

We need to apply direct and inverse variation in the given case,

Since greater the no.of pipes lesser is the time, it is an inverse variation.

Let x1 = 5

x2 = 8

y1 = 80

y2 = ?

According to the problem,

x1/x2 = y2/y1

=> 5/8 = y2/80

=> y2 = 5 × 80 /8

=> y2 = 5 × 10

=> y2 = 50

Hence, Time it will take to fill the tank by 8 pipes of same size is 50 mins.

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