The New Age Pet Store sells Diva Doggie pet waste disposal systems for $50 each. The systems include the unit and a one-year supply of enzyme digester waste terminator. The cost of the unit and enzyme is $35.00. The only other costs are fixed costs of $3,000. During the current period, New Age sold 640 of the units through the stores new on-line catalog division.

What is the margin of safety in units? In dollars?

Margin of safety in units			units
Margin of safety in dollars		$