Frank works at a car dealership and makes $150 per week plus 3.5% commission of his sales. His goal is to make $500 this week, how much will he have to make in sales in order to meet his goal?

How much would he have to earn from his sales commissions (call that A) to get his check up to $ 500, when added to the amount he presently earns? Then just determine - what number can I take 3.5% of, which will equal A? Involves one subtraction operation, and one division operation.

I think Frank needs to set his goals higher... because those are dirt wages.