Question

4 Darren makes $10 per hour. Next semester, he will be maling 514 per hour. What rate of increase does this represent Round the answer to the nearest tenth of a percent b) 40

Answer 1

40% (option B)

Step-by-step explanation:
`\text{Percentage increase = }\frac{new\text{ amount - old amount}}{\text{old amount}}*100`
`\begin{gathered} \text{old amount = \$10} \\ \text{new amount = \$14} \\ \text{percentage increase = }(14-10)/(10)*100 \end{gathered}`
`\begin{gathered} \text{percentage increase = }(4)/(10)*100 \\ \text{percentage increase = 40\%} \\ \\ To\text{ the nearest tenth, 40.0\% same as 40\%} \end{gathered}`

The rate of increase is 40% (option B)