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

Total Per Unit

Sales $(25,800$ units$)$ $ $154,800$ $ $6\mathrm{.}00$

Variable expenses $92,8803\mathrm{.}60$

Contribution margin $61,920$ $ $2\mathrm{.}40$

Fixed expenses $36,120$

Net operating income $ $25,800$

Required:

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

Assume the sales volume increases by $4,386$ 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{.}40$ per unit and the number of units sold increases by $21\%?$

What is the revised net operating income if the selling price increases by $$1\mathrm{.}40$ per unit, fixed expenses increase by $$6,000,$ and the number of units sold decreases by $8\%?$

What is the revised net operating income if the selling price per unit increases by $10\%,$ variable expenses increase by $30$ cents per unit, and the number of units sold decreases by $11\%?$