Final answer:
To determine the sales mix, we need to calculate the contribution margin per product. For product X, the contribution margin is $8 and for product Y, the contribution margin is $5. The sales mix should be 60% X and 40% Y.
Step-by-step explanation:
To determine the sales mix, we need to calculate the contribution margin per product. The contribution margin is the difference between the selling price and the variable cost per unit. For product X, the contribution margin is $15 - $7 = $8. For product Y, the contribution margin is $8 - $3 = $5. Now, let's calculate the ratio of the contribution margin for each product:
Product X: $8 / ($8 + $5) = 0.6154 (rounded to four decimal places)
Product Y: $5 / ($8 + $5) = 0.3846 (rounded to four decimal places)
The sales mix should be 61.54% X and 38.46% Y. Therefore, the closest option to this ratio is 60% X and 40% Y.