Question

John's employer increased his annual salary of $55,000 by $5,700. What percent was his raise rounded to one decimal place?10.4%0.10%0.1%10.36%

Answer 1

From the given information, we can establish the following rule of three:

`\begin{gathered} \text{ \$55,000 ----- 100\%} \\ \text{ \$5700 ------ x} \end{gathered}`

By cross-multiplying these quantities, we have

`x*\text{ \$55000=\$5700}*100\text{ \%}`

Then, the unknwon percentage x is given as

`x=\frac{\text{\$5700}*100\text{ \%}}{\text{ \$55000}}=10.3636\text{ \%}`

Therefore, by rounding this result to the nearest tenth, the answer is: 10.4 %