Miller Company$$s contribution format income statement for the most recent month is shown below:

Total Per Unit

Sales $(21,000$ units$)$ $ $126,000$ $ $6\mathrm{.}00$

Variable expenses $75,6003\mathrm{.}60$

Contribution margin $50,400$ $ $2\mathrm{.}40$

Fixed expenses $29,400$

Net operating income $ $21,000$

Required:

$($Consider each of the four requirements independently$)$:

Assume the sales volume increases by $3,150$ units:

What is the revised net operating income?

What is the percent increase in unit sales?

Using the most recent month$$s degree of operating leverage, what is the percent increase in net operating income?

What is the revised net operating income if the selling price decreases by $$1\mathrm{.}20$ per unit and the number of units sold increases by $22\%?$

What is the revised net operating income if the selling price increases by $$1\mathrm{.}20$ per unit, fixed expenses increase by $$8,000,$ and the number of units sold decreases by $5\%?$

What is the revised net operating income if the selling price per unit increases by $20\%,$ variable expenses increase by $20$ cents per unit, and the number of units sold decreases by $9\%?$