Answer:
1. Calculation of Break Even:
Break Even = Fixed Cost / Contribution per Unit
Fixed Cost = $6,000
Contribution per Unit = Selling Price - Variable cost per unit
Contribution per Unit = $50 - 20 = $30
Break Even = 6,000 / 30
Break Even = 200 trips
2. Monthly Operating profit required = $9,000
Tax Rate = 25%
Before Tax Profit Required = 9,000 / (1-Tax rate)
Before Tax Profit Required = 9,000 / (1 - 0.25) = $12,000
Trips required to sell to earn a monthly operating profit of $9,000 after taxes = (6,000 + 12,000) / 30
Trips required to sell to earn a monthly operating profit of $9,000 after taxes = 600
Trips required to sell to earn a monthly operating profit of $9,000 after taxes = 600 trips