If you work for 30 hours a week for 8.75 an hour, you will get $262.50.
If you also work for an additional 12.5 hours a week at $11 an hour, you will get $137.50.
$262.50+$137.50=$400.
So you have to work 12 and a half hours a week as a landscaper to gain a total of $400.
