Answer:
1. 40%
2. $400
Step-by-step explanation:
1. The computation of the contribution margin ratio is shown below:
Contribution margin ratio = (Sales - variable expenses) ÷ (sales)
= ($200,000 - $120,000) ÷ ($200,000)
= ($80,000) ÷ ($200,000)
= 40%
2. And, if the total sales is increased by $1,000, so the change in the net income would be
= Increased amount of total sales × contribution margin ratio
= $1,000 × 40%
= $400