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Time Value of Money and Risk

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1. The fair rate is 8%. What is 100 per year, forever, worth now?
2. What is the same 100 per year in number 1 worth if it only lasts for 15 years? Same rate.
3. What if the 100 in number 1 was the past cash flow and we expect it to grow at 5% forever? Same rate.
4. What if we only get the 100 from number 1 once at the end of this year? Same rate.
5. What if it we get the 100 from number 1 once, at the end of ten years? Same rate.
6. If we get the 100 from number 1 each year for ten years and invest each payment in an account that earns 8% how much will be there at the end?
7. Put 1200 in an account earning 6%. How long until it grows to 2000?
8. Buy a new calculator for 400. Leave it in the original wrapping for six years. Sell it to a finance nerd for 600 at that point. What is your rate of return?
9. Castle Black Camping is twice as risky as the average stock. The market should earn 11% and the risk free rate is 2%. What is a fair return for CBC?
10. Harlan County Safety Co. has a beta of 1.2. Form a portfolio that is half HCSC and half CBC (from number 9). What is a fair return?
11. Analyze the performance of the following firm:
Blank This Year Last Year
Assets 500 478
Liabilities 100 100
Sales 480 478
EBIT 140 149
Interest 10 10
Taxes 65 70
Net Income 65 69
(This year's ratios: ROE .163, GROA .28, FE .581, GPM .292, ATO .96, EM 1.25, IR .929, TR .5) Find last years and tell the story. (Last year's: .183, .312, .587, .312, 1, 1.265, .933, .496)

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Solution Summary

Each calculation problem has been solved in 2 ways: by hand and using Excel. Step-by-step solutions showing formulas and calculations are available in text form. An Excel file containing formulas and calculations for each calculation problem is also provided.

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1
Since the 100 recurs every year forever, this is a Present Value of Perpetuity problem
PVP = PMT / r
= 100 / 0.08
= 1250

2
Since the 100 recurs every year, this is a Present Value of Annuity problem.
PVA = PMT * [(1 - (1 + r)^-n) / r]
= 100 * [(1- (1 + 0.08)^-15) / 0.08]
= 855.948

3
Since the 10 grows forever, this is a Present Value of Growth Perpetuity problem
PVGP = CF(1) / (r - g),
where CF(1) = CF(0) * (1 + g)

CF(1) = 100 * (1 + 0.05)
= ...

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  • MSc, California State Polytechnic University, Pomona
  • MBA, University of California, Riverside
  • BSc, California State Polytechnic University, Pomona
  • BSc, California State Polytechnic University, Pomona
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