Practice Test Discussion

An outlet pipe can empty the tank in 39 min, then the part of the tank that will get emptied in 1 min is?

$\frac{1}{36}$

$\frac{5}{6}$

$\frac{1}{39}$

$\frac{1}{4}$

Explanation

According to the formula, if a pipe can comletely empty a tank in x hours, then the portion emptied in 1 hour is $\frac{1}{x}$ .

outlet pipe can empty the tank in 39 min.

$\frac{1}{39}$ ^thpart of the tank will be emptied by outlet pipe in 1 min.

Hence option C is correct

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