First we have to find how much Kyle earned taking to consideration only 38h at work So 38*14$=532$ Now, to find commission bonus we have to 1200-532=668 Finally, we can find what dollar amount of car Kyle must sell. We know that 668 is 8% of that number. We can use proportion and cross multiplying, so: 8% ----------- 668 100% --------x $ - its the result.