evanwall91
17.12.2019 •
Mathematics
Arecently installed machine earns the company revenue at a continuous rate of dollars per year during the first six months of operation and at the continuous rate of 75,000 dollars per year after the first six months. the cost of the machine is $150,000, the interest rate is 7% per year, compounded continuously, and is time in years since the machine was installed. (a) find the present value of the revenue earned by the machine during the first year of operation. (b) find how long it will take for the machine to pay for itself; that is, how long it will take for the present value of the revenue to equal the cost of the machine
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Ответ:
All you have to do is notice that 5 is a common factor of both 25 and 45. Divide both numbers by 5 and you get 5/9.