Compute the total commission for the following commission payment plans.

	Graduated Commission Rates	Sales	Commission
a.	1% on sales to $125,000 2% on sales above $125,000	$224,000	$
b.	2.5% on sales to $65,000 3% from $65,000 to $130,000 3.5% on sales above $130,000	$195,800	$
c.	1% on sales to $145,000 3% from $145,000 to $290,000 5% on sales above $290,000	$252,600	$