Question

Find the percent increase when the original amount is 60 and the new amount is 66

Answer 1

To find the percentage increase, we need to know the percentage change

Recall that

`\text{percentage change=}\frac{new\text{ amount-old amount}}{\text{old amount }}*100\text{ \%}`

Where

`\begin{gathered} \text{New amount=66} \\ \text{old amount=60} \end{gathered}`

Substitute into the formula above, we have

`\begin{gathered} \text{percentage change=}\frac{\text{66-60}}{60}*100\text{ \%} \\ \text{Then} \\ \text{percentage change=}\frac{\text{6}}{60}*100\text{ \%} \end{gathered}`

After simplification, we have

`\text{percentage change =10\%}`

Therefore

The percentage increase is 10%