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question. 1) sted a lump sum 28 years ago at 4.05 percent annual interest. Today, he gave you the proceeds of that investment
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Answer #1

1. Let the Amount Invested be PV

Interest Rate = r = 4.05%

Number of years = n = 28

Value of investment now = FV = $48613.24

=> FV = PV(1+r)n

=> PV = FV/(1+r)n = 48613.24/(1+0.0405)28 = $15,994.70

2. Amount Invested at end of each quarter = P = $1500

Quarterly Interest rate = r = 0.35% = 0.0035

Number of Periods = n = 4*4 = 16 quarters

Present Value = PV = P/(1+r) + P/(1+r)2 +....+ P/(1+r)n

= P[1- (1+r)-n]/r

= 1500[1- (1+0.0035)-16]/0.0035

= $23,300.75

3. Interest Rate = r = 18.9%

Time Period = t = 1 year

EAR = ert - 1 = e0.189*1 - 1 = 0.2080 = 20.80%

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