Answer:
a. How much new annual net income (each year for 6 years) is necessary to recover the initial investment of the five GPS systems at the annual effective interest rate of 9%?
the present value of the investment = -$4,600 x 5 = -$23,000
6 years useful life, salvage value $1,500
operating costs:
year 1 = -$1,000
year 2 = -$1,200
year 3 = -$1,400
year 4 = -$1,600
year 5 = -$1,800
year 6 = -$2,000 + $1,500 = -$500
we need to calculate the present value of the required investment (I used an excel spreadsheet or financial calculator to do this) using a 9% discount rate: PV of investment = -$26,248
now to calculate the capital recovery per year we can use an annuity factor:
$26,248 = annuity x annuity factor (9%, 6 years)
$26,248 = annuity x 4.4859
annuity = $26,248 / 4.4859 = $5,851
This means that the company needs to generate at least $5,851 of additional revenue per year to pay for this investment.
b. The company estimates an increased net income of $6000 per year for all five systems. This is total new income, not on top of part a. Now consider if the implementation of the GPS systems is financially viable. You should consider initial investment and maintenance costs. Use the annual effective interest rate of 9% and report the income or loss the company would experience each year.
Since the $6,000 is higher than the minimum required amount to recover the investment, then we can assume that implementing the GPS system is financially viable.