Question

a salesman earned $900 last week. He has a retainer of $270 and earns a commision of 12% of sales over $2000. Find the value of sales.

Answer 1

Let s=sales Let c=commision.

The retainer + commision equals the salesman's income of $900.

So you have $270 + c = $900

c=$900-$270 Which gives us a commision of $630.

The commission of $630 equals 12% of sales over $2,000.

So we have .12(s-2000)=$630

Which gives us .12s-$240=$630

This becomes .12s=$870

So the total sales are $870/.12 or $7,250