XY Company estimated its sales for the coming 4 months as follows:
October			$10,000
November			$11,000
December			$15,000
January			$9,000
Estimated cost of goods sold			55.00%
Other variable costs (commissions)			20.00%
Estimated fixed costs			$2,500.00
The company maintains its inventory at twice it estimated sales requirements
(sales requirements are cost of goods sold of the next month)
The beginning inventory			$9,000

Contribution margin for November is