Answer:
Weighted average contribution margin per unit = $12.55 per unit
Explanation:
The weighted average contribution margin is used to determine the contribution margin of the business in case its product line consists of more than one product. It is calculated by taking the contribution margin of each product and multiplying it with the sales mix weight of each product and summing it up. The formula can be written as,
Weighted average contribution margin per unit = wA * CM A + wB * CM B + .... + wN * CM N
Where,
Weighted average contribution margin per unit = 0.25 * 10 + 0.35 * 15 +
0.4 * 0.12
Weighted average contribution margin per unit = $12.55 per unit