Due to erratic sales of its sole producta high-capacity battery for laptop computersPEM, Inc., has been experiencing difficulty for some time. The companys contribution format income statement for the most recent month is given below:

Sales (12,600 units $20 per unit)	$	252,000
Variable expenses		126,000
Contribution margin		126,000
Fixed expenses		141,000
Net operating loss	$	(15,000)

4. Refer to the original data. The Marketing Department thinks that a fancy new package for the laptop computer battery would help sales. The new package would increase packaging costs by $0.40 cents per unit. Assuming no other changes, how many units would have to be sold each month to earn a profit of $4,900 (Do not round intermediate calculations and round your final answer to the nearest whole number.) ales units