Question

When added to its half gives 30. The number is _______.

• A. 15
• B. 45
• C. 40
• D. 20

Answer 1

The correct option is D 20

Let the number be 'x'.
According to the question,
$x+\frac{x}{2}=30$
$\Rightarrow \frac{2x+x}{2}=30$
$\Rightarrow 3x=60$
$\Rightarrow x=20$