In: Economics
1. If the present worth of a project that yields 120,000 in regular cash flow over 40 periods was calculated to be 1.5 million, what interest rate was used? Report in percentage format with 3 digits after decimal point.
Present Value = Future value/ ((1+r)^t) | ||||||||||||||||||||||||||||||||||||||||
where r is the interest rate and t is the time period | ||||||||||||||||||||||||||||||||||||||||
sum of present values = 1500000 | ||||||||||||||||||||||||||||||||||||||||
Use excel to find r that is the interest rate. | ||||||||||||||||||||||||||||||||||||||||
r | 0.0755 | |||||||||||||||||||||||||||||||||||||||
t | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 |
cash flow | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 | 120000 |
present value | 111576 | 103743.4 | 96460.61 | 89689.08 | 83392.92 | 77538.74 | 72095.53 | 67034.43 | 62328.62 | 57953.16 | 53884.85 | 50102.14 | 46584.97 | 43314.71 | 40274.02 | 37446.79 | 34818.03 | 32373.81 | 30101.17 | 27988.07 | 26023.31 | 24196.48 | 22497.89 | 20918.54 | 19450.06 | 18084.66 | 16815.12 | 15634.7 | 14537.15 | 13516.64 | 12567.77 | 11685.52 | 10865.2 | 10102.46 | 9393.268 | 8733.862 | 8120.746 | 7550.67 | 7020.614 | 6527.767 |
sum of present values | 1502943 | |||||||||||||||||||||||||||||||||||||||
The interest rate that was used was equal to 7.550% approximately. |