Data for Herron Corporation are shown below:

	Per Unit			Percent of Sales
Selling price	$	75		100%
Variable expenses		45		60%
Contribution margin	$	30		40%

Fixed expenses are $75,000 per month and the company is selling 3,000 units per month.

2-a.	Management is considering using higher-quality components that would increase the variable cost by $3 per unit. The marketing manager believes that the higher-quality product would increase sales by 15% per month. Calculate the change intotal contribution margin.

Total contribution margin (Click to select) decreases increases by

$