SOLUTION
This question means that if you work for 40 hours, you earn $12 for each hour you work. But if you work for more than 40 hours you earn $12 multiplied by 1.5 for the extra hours after 40 hours.
So if you work for 47 hours, you earn
[tex]\begin{gathered} for\text{ the first 40 hours, we have } \\ 40\text{ hours }\times12\text{ dollars = 480 dollars } \end{gathered}[/tex]
For the extra 7 hours, we have
[tex]1.5\times7\text{ hours }\times12\text{ dollars = 126 dollars }[/tex]
Total money earned becomes
[tex]480+126=606[/tex]
Hence the answer is $606
