Practice Test Discussion

A tank is $\frac{1}{4}$ ^th part full of water. When 20 L of water is taken out the tank become empty. Calculate total capacity of the tank.

60 L

40 L

80 L

30 L

Explanation

Let the total capacity of the tank be x liters

As per the question,

$\frac{1 x}{4} = 20 \Rightarrow 1 x = 20 \times 4 \Rightarrow x = \frac{20 \times 4}{1} = 80 L$

Hence option C is correct.

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