Her gross income from this commission over the life of the lease is $28,560.
Commission for the first five years
Commission=5×(48,000× .075)
Commission=5×3600
Commission=$18,000
Commission for the next three years
Commission=3×(48,000 ×.05)
Commission=3×2,400
Commission=$7,200
Commission for the final two years
Commission=2×(48,000 ×.035)
Commission=2×1,680
Commission=$3,360
Gross income commission:
Gross income commission=$18,000+$7,200+$3,360
Gross income commission=$28,560
Inconclusion her gross income from this commission over the life of the lease is $28,560.
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