Question

Let ‘$a$’ be the original number and there is a $30\%$ increase. To find the final figure, what should be multiplied to the original number?

• A. $130$
• B. $\frac{130}{100}$
• C. $30$
• D. $\frac{30}{100}$

Answer 1

The correct option is B

$\frac{130}{100}$

Given that '$a$' original number.

$30\%$ increase $=\left(\frac{30}{100}\right)\times a$

Adding the $30\%$ increase to the original number will give the new number

New Number $=a+\frac{30}{100}\times a$

$=a\times (1+\frac{30}{100})$

$=a\times \left(\frac{130}{100}\right)$

Hence, the number will be multiplied by $\frac{130}{100}$