Answer:
$12
Step-by-step explanation:
It is given that,
Rachael earned $42 for [tex]3\dfrac{1}{2}[/tex] hours at her job today. It means,
For 7/2 hours, earning is $42
For 1 hour, we divide $42 by 7/2 as follows :
[tex]1\ h=\dfrac{42}{\dfrac{7}{2}}\\\\=\dfrac{42\times 2}{7}\\\\=\$12[/tex]
So, he will earn $12 per hour.
