Practice Test Discussion

A tank is $\frac{3}{4}$ ^th part full of water. When 30 L of water is taken out the tank become empty. The total capacity of the tank is___

[SSC CGL 2005]

36 L

42 L

40 L

38 L

Explanation

Let the total capacity of the tank be x liters

As per the question,

$\frac{3 x}{4} = 30 \Rightarrow 3 x = 30 \times 4 \Rightarrow x = \frac{30 \times 4}{3} = 40 L$

Hence option C is correct.

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