3% battery

12. Doug is a salesperson in a retail store and earns $75 per week, plus 15% of his weekly sales. If Doug makes $555 one week, what are his sales for that week? (1 point) $3,200 $627 $566 $1,914 help me figure this out please

I did the same as Truth Teller and im guessing they are right

I get 3,200 I tested it out more and I did 480 divided by .15 and I got 3,200

Thank you for helping me understand it