Jorge earns 9% from all his sales, so his commission is:
89400×0.09 = $8046
Harris made $447 more than that, so his commission is:
8046 + 447 = $8493
To calculate his commission rate, we can use the following equation:
89400 x rate percentage = 8493
rate percentage = 8493 ÷ 89400
rate percentage = 0.095
rate percentage = 9.5%
So Harris' commission is $8,493 with a rate of 9.5%.