If he works the same amount of hours each week, we can call this constant number of hours with letter "C".
Then, the number of hours he worked in 15 weeks can be expressed as 15*C. If this number is equal to 532.5 hours, we can write:
[tex]\begin{gathered} 15\cdot C=532.5\text{ hours} \\ C=\frac{532.5}{15} \\ C=35.5\text{ hours/wk} \end{gathered}[/tex]Answer: he works 35.5 hours per week.
