Answer :
We know that
• Together they earned $12.50 an hour for 10 hours of work.
We just have to multiply to find the total earnings.
[tex]12.50\cdot10=125[/tex]They earned $125 together. Each of them earned $62.50 since they received half of the earnings each.
If he bought a CD, then we can express
[tex]62.50-(CD)[/tex]