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?

Hey there!

Your question states:

 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?

We don't want to 9% to really trick us.

We just do 11,650 - 4,000 = 7,650.

Now, we can adjust everything.

That 9% of the commission on the sales was worth . . . 

7,650

Your correct and clarified answer would be . . .

[tex]\boxed{\boxed{\boxed{7,650}}}[/tex]

Hope this helps.
~Jurgen