Answer
8% of Monthly Revenue = $0.08 \times 32,888.80 = 2,631.10$
Work Step by Step
Breakeven Point (in units) = Total Fixed Costs $\div$ Contribution Margin per Unit
Breakeven Point with Fixed Rent ≈ 1,644.44 units (calculated earlier)
Monthly Revenue at Breakeven = Breakeven Point $\times$ Selling Price
Monthly Revenue at Breakeven = $1,644.44 \times 20 = 32,888.80$
8% of Monthly Revenue = 0.08 $\times$ Monthly Revenue at Breakeven