Question

$\frac{3}{4}$ part of a tank is full of water .When 30 litres of water is taken out the tank becomes empty.
What is the capacity of the tank ?

• A. $36$ litres
• B. $42$ litres
• C. $40$ litres
• D. $38$ litres

Answer 1

The correct option is C $40$ litres

$\frac{3}{4}$ of total capacity = 30 litres
$\Rightarrow$ Total capactiy $=\frac{4}{3}\times 30$ litres= $40$ litres