Question

A tap can fill a tank of 30 litres in 6 hours. in how many hours it can fill a tank of 45 litres?

Answer 1

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if correct

Answer 2

Solution :-

This a case of direct proportion and can be solved through the Unitary Method.

To fill a tank of 30 litres, a tap takes time = 6 hours

To fill a tank of 1litre, the same tap will take time = 6/30 hours

To fill a tank of 45 litres, the same tap will take time = (6*45)/30 hours

= 270/30

= 9 hours

So, to fill a tank of 45 litres, the same tap will take 9 hours. 

Answer.