Parkhill, Smith, and Cooper, a consulting engi­neering firm, pays a bonus to each engineer at the end of the year based on the company’s profit for that year. If the company’s initial investment was $1.2 million, what rate of return has it made if each engineer’s bonus has been $3000 per year for the past 10 years? Assume the company has six engi­neers and that the bonus money represents 5% of the company’s profit.

What will be an ideal response?


Bonus/year = 6(3000)/0.05 = $360,000
1,200,000 = 360,000(P/A,i,10)
(P/A,i,10) = 3.3333
i = 27.3%

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