Question

Four times a number is a ____$\%$ increase in the number.

Answer 1

Calculate percentage Increase

Percentage increase is given as,

$\mathbf{Percentage}\mathbf{}\mathbf{increase}\mathbf{=}\frac{\mathbf{Value}\mathbf{}\mathbf{after}\mathbf{}\mathbf{increase}\mathbf{-}\mathbf{Original}\mathbf{}\mathbf{value}}{\mathbf{Original}\mathbf{}\mathbf{value}}\mathbf{\times }\mathbf{100}$

Let the number be $x$.

Four times of number $=4x$.

Percentage increase in $x$ $=\frac{4x-x}{x}\times 100=300\%$

Therefore, four times a number is $300\%$ increase in the number.