Q8 of 54 Page 165

7 taps of the same size fill a tank in 1 hour 36 minutes. How long will 8 taps of the same size take to fill the tank?

More the number of taps, lesser the time required to fill a tank. So, it is an inverse proportion.


Let the required time be x minutes.


⇒ 7 × (60 + 36) = 8 × x


⇒ x = = 84 minutes = 1 hour 24 minutes


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