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Albert Einstein reportedly said, “Compound interest is the eighth wonder of the world. He who understands...

Albert Einstein reportedly said, “Compound interest is the eighth wonder of the world. He who understands it, earns it. He who doesn’t, pays it.” Regardless of whether Einstein uttered these exact words, the essence of his statement is still immensely powerful and cannot be disputed. For anyone who wants to build lasting wealth, understanding and harnessing the power of compound interest is essential. For the more visual of you, imagine, if you will, building the bottom part of a snowman. It starts with a snowball (or initial investment). You roll it around in the snow and it slowly gets bigger (interest on the investment). A slow and monotonous process until something wonderful becomes apparent – the snowball not only gets bigger and bigger, but at a faster and faster rate (interest on the interest).

Your friend, Mike Szyslak wants be a millionaire, and he found several ways applicable. But he is still hesitating among the various options and comes to you for financial advice. Complete each of the options, below, with your group.

  • Option 1: He is considering to buy Mega Millions lottery. If the current tax rate on earnings of lottery is 40%, how much money will he have to win on a lottery to become a millionaire?
  • Option 2: His uncle promised to invest his business $100,000 a year over the next 15 years, and the interest rates over next 15 years are expected be at 5% per annual. Can you help him to know whether the present value of such series of investments make him equivalent to be a millionaire today?
  • Option 3: He considers to save money and become a millionaire. Starting at age 22, every night Mike takes $5 out of your pocket and put it in a manila envelope. At the end of the year, you place the money from the envelope in a stock fund with an average interest rate of 10%. Will the amount he has in the account ensure him a millionaire when you retire at age 65? What if he starts saving at age 40?
  • Option 4: He sets aside $50,000 into a saving account now, and will deposit $50,000 into the account at the beginning of each year for next 10 years. If the market rate is 10%, Will he become a millionaire in 10 years?
  • Option 5: Mike considers to buy 1,000 bonds. The bond is semi-annual coupon bond with 10-year maturity, $1,000 par value bond with a 10 percent annual coupon, and 10 percent annual required rate of return? How much does it cost now if he wants to receive all the coupon payments and par values during the 10-year period? What would be the value of the bond if, just after it had been issued, the expected inflation rate rose by 3 percentage points, causing Mike to require a 13 percent return? What would happen to the bonds' value if inflation fell, and required rate of return declined to 7 percent?

Which of the options would you recommend that Mike choose? Why?

You may use algebra, TVM tables, financial calculator, or Excel to solve these problems, and present a report to explain the concept of Time Value of Money.

Solutions

Expert Solution

Option 1)

He wants earnings on lottery after tax of $1,000,000.

Total lottery winnings = "x"; tax rate = 0.4

Total lottery winnings*(1-tax rate) = earnings on lottery after tax

x*(1-0.4) = 1,000,000

x*0.6 = 1,000,000

x = 1,000,000/0.6

x = 1,666,667

He has to win $1,666,667 on a lottery to become a millionaire.

Option 2) Yes, Present value of such series of investments make him equivalent to be a millionaire today.

Year Investment Present value factor @ 5% Discounted cash flow
1          100,000      0.9524          95,238
2          100,000      0.9070          90,703
3          100,000      0.8638          86,384
4          100,000      0.8227          82,270
5          100,000      0.7835          78,353
6          100,000      0.7462          74,622
7          100,000      0.7107          71,068
8          100,000      0.6768          67,684
9          100,000      0.6446          64,461
10          100,000      0.6139          61,391
11          100,000      0.5847          58,468
12          100,000      0.5568          55,684
13          100,000      0.5303          53,032
14          100,000      0.5051          50,507
15          100,000      0.4810          48,102
PV of Investment    1,037,966

Option 3) Starting to invest at age 22 make him millionaire at age 65. While starting at age 40 doesn't.

Let assume total number of days in a year = 365days (ignore leap year)

Savings per year = $5*365 = $1,825

Option 4) No, he will not become millionaire. He earns only $876,558.35 at the end of year 10.

Option 5)

Since the bond coupon rate is equal to required rate of bond, value will be equal to par. So cost of the bond is $1,000 (equal to par value).

Price of the bond = 834.72 (when required rate of return = 13%) (Note: Since coupon is paid semi-annually, required raturn is converted into per 6-months i.e. 13%/2 = 6.5%)

Year Type Cashflow Present value factor @ 6.5% Discounted cash flow
            0.5 Coupon                  50                                              0.9390         46.95
            1.0 Coupon                  50                                              0.8817         44.08
            1.5 Coupon                  50                                              0.8278         41.39
            2.0 Coupon                  50                                              0.7773         38.87
            2.5 Coupon                  50                                              0.7299         36.49
            3.0 Coupon                  50                                              0.6853         34.27
            3.5 Coupon                  50                                              0.6435         32.18
            4.0 Coupon                  50                                              0.6042         30.21
            4.5 Coupon                  50                                              0.5674         28.37
            5.0 Coupon                  50                                              0.5327         26.64
            5.5 Coupon                  50                                              0.5002         25.01
            6.0 Coupon                  50                                              0.4697         23.48
            6.5 Coupon                  50                                              0.4410         22.05
            7.0 Coupon                  50                                              0.4141         20.71
            7.5 Coupon                  50                                              0.3888         19.44
            8.0 Coupon                  50                                              0.3651         18.25
            8.5 Coupon                  50                                              0.3428         17.14
            9.0 Coupon                  50                                              0.3219         16.09
            9.5 Coupon                  50                                              0.3022         15.11
          10.0 Coupon                  50                                              0.2838         14.19
          10.0 Redemption            1,000                                              0.2838      283.80
PV of Investment      834.72

Price of the bond = 1,213.19 (when required rate of return = 7%) (Note: Since coupon is paid semi-annually, required raturn is converted into per 6-months i.e. 7%/2 = 3.5%)

Year Type Cashflow Present value factor @ 3.5% Discounted cash flow
            0.5 Coupon                  50                                              0.9662                                  48.31
            1.0 Coupon                  50                                              0.9335                                  46.68
            1.5 Coupon                  50                                              0.9019                                  45.10
            2.0 Coupon                  50                                              0.8714                                  43.57
            2.5 Coupon                  50                                              0.8420                                  42.10
            3.0 Coupon                  50                                              0.8135                                  40.68
            3.5 Coupon                  50                                              0.7860                                  39.30
            4.0 Coupon                  50                                              0.7594                                  37.97
            4.5 Coupon                  50                                          &nb

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