Jorge earns a 9% commision on all his sales. he had sales of $89,400 for the month. harris works for a different company, and also sold $89,400 for the month but made $477 more than jorge. what is harris' commission rate?

Given that, Jorge's commission rate is 9% and his sales for the month  was $89,400, his commission was 9/100*$89,400=$8046.
Harris's sales for the month was also $89400 but he earned $477 more than Jorge, so his commission was $8046+$477=$8523
So his commission rate can be found by dividing his earnings by his sales and multiplying the quotient by 100. His commission rate was 8543/89400*100=9.53%(rounded to the nearest hundredth)