Question

8. Ethan earns $13 per hour at his341job. Last week he workedhours. How much did he earn lastweek?A $13.75C $445.25B $442.00D $448.50

Answer 1

To solve the exercise, first it is convenient to convert the mixed number to decimal:

`34(1)/(2)=34+(1)/(2)=34+0.5=34.5`

Now, you can use a rule of three:

`\begin{gathered} 1\text{ hour}\rightarrow\text{\$13} \\ 34.5\text{ hours}\rightarrow\text{\$x} \end{gathered}`
`\begin{gathered} x=\frac{34.5\text{ hours }\cdot\text{ \$13}}{1\text{ hour}} \\ x=\frac{34.5\cdot\text{ \$13}}{1} \\ x=34.5\cdot\text{ \$13} \\ x=\text{ \$}448.5 \end{gathered}`

Therefore, Ethan did earn $ 448.50 last week.