6.

Which of the following is not true as the total volume of activity changes:

A.	the variable cost per unit changes.

B.	the total of fixed costs remain the same.

C.	variable costs per unit remain the same.

D.	the total variable costs changes.

10.

The number of units needed to break even is calculated by dividing the total fixed costs by:

A.	Total contribution margin.

B.	Contribution margin per unit.

C.	Contribution margin ratio.

D.

Contribution margin less variable costs

16.

Margin of safety is calculated how?

A.	Break-even sales less total sales.

B.	Total sales less variable costs.

C.	Total sales less contribution margin.

D.	Total sales less break-even sales.