Answer and Explanation:
The computation is shown below:
1) The contribution margin ratio is
Contribution margin ratio = Unit Contribution margin ÷ Unit selling price
where,
Unit selling price is
= Total sales ÷ Number of units
= $200,000 ÷50,000
= $4
And,
Unit variable expense = Total variable expenses ÷ number of units
= $120,000 ÷ 50,000
= $2.4
Now
Contribution margin per unit = Selling price per unit - Variable cost per unit
= $4 - $2.4
= $1.6
So, the contribution margin ratio is
Contribution margin ratio = $1.6 ÷ $4
= 0.4 or 40%
2)
The net operating income is
In the case when the total sales increased by $1,000
Sales $201,000
Less: variable expenses $120,600
Contribution margin $80,400
Less: Fixed costs $65,000
Net operating income $15,400
Prior increase in the sales, the net operating income is
Sales $200,000
Less: variable expenses $120,000
Contribution margin $80,000
Less: $65,000
Net operating income $15,000
So it increase by $400 i.e.
= $15,400 - $15000
= $400
