Corley Communications performed a customer profitability analysis and obtained the following results for its bottom five customers:
 

Customer		Sales			Customer Net Profit			Customer Profit Margin
Albert		$	525,000		$9,450			1.80	%
Brown		$	1,200,000		$16,800			1.40	%
Carter		$	1,400,000		$5,600			0.40	%
Dyson		$	600,000		($1,500	)		(0.25	%)
English		$	460,000		($4,140	)		(0.90	%)

Chris Corley, vice president for marketing, believes that if these five customers are dropped, the selling expenses required to serve them will be eliminated. Company revenues total $18,000,000; the current average customer profit margin is 7.2%, and net income is $400,000.

a.) Calculate the total customer net profit.
 

Total customer profit margin

$

  

(b) Calculate average customer profit margin after dropping all five customers. (Round answer to 2 decimal places, e.g. 15.25%.) Average customer profit margin