A company sold a total of 1,000 units for total sales revenue of $70,000.

The company incurred total variable expenses of $38,500 and total fixed expenses of $ 23,310.

Based on this, the company reported a total contribution margin of $31,500 and net operating income of $ 8,190.

Use this information to answer the following questions. Assume that all units are within the relevant range.

1 Calculate the net operating income if the variable cost per unit increases by $1, spending on fixed costs increases by $1,600, and unit sales increase by 220 units.

2 Calculate the break-even point in unit sales.

3 Calculate the break-even point in unit sales.

4 Calculate the number of units that must be sold to earn a target profit of $18,900.