ANSWERS TO QUESTIONS
1. (a) Cost behavior analysis is the study of how specific costs respond to changes in the level of activity
within a company.
(b) Cost behavior analysis is important to management in planning business operations and in deciding
between alternative courses of action.
3. Fixed costs remain the same in total regardless of changes in the activity level. In contrast, fixed
costs per unit vary inversely with activity. As volume increases, fixed costs per unit decline and vice
versa.
5. This is true. Most companies operate within the relevant range. Within this range, it is possible to
establish a linear (straight-line) relationship for both variable and fixed costs. If a relevant range
cannot be established, segregation of costs into fixed and variable becomes extremely difficult.
8. Variable cost per unit is $1.30, or [($165,000 – $100,000) ÷ (90,000 – 40,000)]. At any level of activity,
fixed costs are $48,000 per month [$165,000 – (90,000 X $1.30)].