Answer:
Results are below.
Explanation:
F<u>irst, we determine the total fixed costs and unitary variable cost:</u>
Total fixed costs= 60,000 + 41,000 + 24,000 + 10,000
Total fixed costs= $135,000
Unitary variable cost= 10 + 5= $15
<u>To calculate the break-even point in units and dollars, we need to use the following formulas:</u>
Break-even point in units= fixed costs/ contribution margin per unit
Break-even point in units= 135,000 / (60 - 15)
Break-even point in units= 3,000 rentals
Break-even point (dollars)= fixed costs/ contribution margin ratio
Break-even point (dollars)= 135,000 / (45/60)
Break-even point (dollars)=$180,000
<u>Now, we can determine the margin of safety:</u>
Margin of safety ratio= (current sales level - break-even point)/current sales level
Margin of safety ratio= (4,000 - 3,000) / 4,000
Margin of safety ratio= 25%
<u>Sales can decrease by 25% before having a net loss.</u>
Increase in unitary variable costs= $3
Increase in selling price= $8
Break-even point in units= fixed costs/ contribution margin per unit
Break-even point in units= 135,000 / (68 - 18)
Break-even point in units= 2,700 rentals
Break-even point (dollars)= fixed costs/ contribution margin ratio
Break-even point (dollars)= 135,000 / (50/68)
Break-even point (dollars)=$183,600