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If 6 pipes fill a tank in 120 minutes, then, which of the following is the time taken to fill the tank with 5 pipes?

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100 min

144 min

140 min

108 min

answer is B.

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Detailed Solution

Given,
Given that 6 pipes fill a tank in 120 minutes.
It will take more time to fill the tank if number of pipes are less.
Then,
Time taken by 1 pipe to fill a tank

= 120 × 6

.
Time taken by 5 pipes,

= 1205 × 6

= 144 minutes.
Hence, the time taken by 5 pipes to fill a tank is 144 minutes.
Therefore, option 2 is correct.

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