Answer:
30%
Explanation:
Data provided
Sales = $10
Drive cost = $7
The computation of contribution margin ratio is shown below:-
Contribution margin ratio = Contribution ÷ Sales × 100
= ($10 - $7) ÷ $10 × 100
= $3 ÷ $10 × 100
= 0.3 × 100
= 30%
Therefore for computing the contribution margin ratio we simply applied the above formula.