Question

By what number must a given number '$x$' be multiplied to increase the number by $50\%$?

• A. 1.5
• B. 2.5
• C. 0.5
• D. 3.5

Answer 1

The correct option is A 1.5

Let $x$ be the number.
Increase in its value = $50\%$ of $x$
$=\frac{50}{100}\times x=0.5x$
Therefore, increased value $=x+0.5x$
$=1.5x$
Therefore, the given number must be multiplied by 1.5 to increase the number by $50\%$.