Answer:
The contribution margin and the contribution ratio is $0.90 and 50% respectively.
Step-by-step explanation:
The formula to compute contribution margin per package is shown below:
Contribution margin = Selling price per package - variable expense per package
= $1.80 - $0.90
= $0.90
And, the formula to compute contribution ratio is shown below:
= (Contribution per package ÷ selling price per package) × 100
= ($0.90 per package) ÷ ($1.80 per package) × 100
= 50%