Answer:
The weighted average contribution margin is d. $2.30
Step-by-step explanation:
Contribution margin per unit of the economy clipper = Sales price - Cost per unit = $5 - $3 = $2
Contribution margin per unit of the high-end model = Sales price - Cost per unit = $12 - $9 = $3
Economy clippers constitute 70 percent of the market with the remaining 30 percent being high-end clippers.
The weighted average contribution margin = Contribution margin of the economy clipper x 70% + Contribution margin of the high-end model x 30% = $2 x 70% + $3 x 30% = $2.3