You are setting up a trust fund to give engineering
students scholarships forever, and should be able to get 5%
interest on the fund. You would like to:
Provide 1 student with a $2,000 scholarship EACH
YEAR
Provide an additional student with a $5,000
scholarship every four years, STARTING IN YEAR FOUR.
a.Draw the cash flow diagram for the problem – include
4 years in the diagram (one cycle).
b. How much money needs to be in the trust fund today to financially support the scholarship fund forever?
a.
Year 1 | Year 2 | Year 3 | Year 4 |
2000 | 2000 | 2000 | 2000+5000 = 7000 |
b.
The money required today will be the present value of all the future cash flows. The future cash flow is two infinite GP series:
Yearly - 2000, 2000, 2000, 2000, ................... till infinite
Every 4th Year - 5000, 5000, 5000, ............... till infinite
So finding the PV = PV of the first series and PV of the second series
interest rate = 5%
PV = (2000/(1.05) + 2000/(1.05^2) + 2000/(1.05^3) + 2000/(1.05^4) .............) + (5000/(1.05^4) + 5000/(1.05^8) + 5000/(1.05^12) ..........)
PV = (2000/1.05)/(1 - (1/1.05)) + (5000/1.05^4)/(1 - (1/1.05^4)) = $63,201.183
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