A tank can be filled in 4.5 hours but it takes 5 hours due to a leak in its bottom. If the tank is full, then the time that the leak will take to empty it is:

45 hrs

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50 hrs

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25 hrs

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40 hrs

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9 hrs

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Solution

The correct option is A
45 hrs

Time taken without leak= 4.5 hours

Time taken with leak = 5 hours

Time taken for entire tank to be leaked = $\frac{4.5 \times 5}{5 - 4.5}$ = 45 hours

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A tank can be filled in 4.5 hours but it takes 5 hours due to a leak in its bottom. If the tank is full, then the time that the leak will take to empty it is:

The correct option is A 45 hrs Time taken without leak= 4.5 hours Time taken with leak = 5 hours Time taken for entire tank to be leaked = 4.5×55−4.5 = 45 hours

The correct option is A
45 hrs

Time taken without leak= 4.5 hours

Time taken with leak = 5 hours

Time taken for entire tank to be leaked = $\frac{4.5 \times 5}{5 - 4.5}$ = 45 hours