John's monthly paycheck consists of $4000 plus a 9% commission on all of his sales. during one month, john earned $11,650. what were his sales during that month?

The first thing you should do for this case is write an equation that allows you to find John's sales during the month.

Let

x = amount of money in sales.

The equation is:

4000 + 0.09x = 11650

Clearing x we have:

0.09x = 11650-4000

x = (11650-4000) / (0.09)

x = $ 85,000

answer:

his sales during that month were

$ 85,000