Question

In: Economics

In detail show and explain all steps Martha is 61 years old (born January 2, 1958)...

In detail show and explain all steps

Martha is 61 years old (born January 2, 1958) and will receive disability payments of $3500. per month till she reaches 65.  

After age 65 she will receive $1750. per month for life. What is the present worth of this policy if she lives until:

a) 80 years

b) 85 years

c) 90 years

Annual interest is 2.5% compounded semi-annually

and what should the insurance company offer her as a payout to make it worth her while

Solutions

Expert Solution

We have the following information

Interest rate (i) = 2.5% semi-annually

No. of interest periods per year, (C) = 2

Effective interest rate (R) = ((1 + (i/C))C – 1

i = the nominal Interest rate

C = the number of interest periods in a year

R = ((1 + (2.5%/2))2 – 1

R = 2.52% compounded annually

Martha is 61 years old and for the next 4 years she will receive $3,500 per month. This means that she wil receive (3,500 × 12 × 4) $168,000 per year for the next four years.

After ataining the age of 65 year she will start to receive $1,750 per month or $21,000 per year

Case 1: Marths lives till 80 years

Present Worth = 168,000(P/A, 2.52%, 4) + 21,000(A/F, 2.52%, 5)(P/A, 2.52%, 16)

Present Worth = 168,000[((1+0.0252)4 – 1)/0.0252(1+0.0252)4] + {21,000 × [0.0252/((1 + 0.0252)5 – 1)] × [((1+0.0252)16 – 1)/0.0252(1+0.0252)16]}

For the payments received after turning 65 years, we have first converted the 5th year payment into annualized payment for the 5 years and then calculated the present worth for the continuing annual payment.

Present Worth = $683,744.40

Case 2: Marths lives till 85 years

Present Worth = 168,000(P/A, 2.52%, 4) + 21,000(A/F, 2.52%, 5)(P/A, 2.52%, 21)

Present Worth = 168,000[((1+0.0252)4 – 1)/0.0252(1+0.0252)4] + {21,000 × [0.0252/((1 + 0.0252)5 – 1)] × [((1+0.0252)21 – 1)/0.0252(1+0.0252)21]}

Present Worth = $696,198.31

Case 3: Marths lives till 90 years

Present Worth = 168,000(P/A, 2.52%, 4) + 21,000(A/F, 2.52%, 5)(P/A, 2.52%, 26)

Present Worth = 168,000[((1+0.0252)4 – 1)/0.0252(1+0.0252)4] + {21,000 × [0.0252/((1 + 0.0252)5 – 1)] × [((1+0.0252)26 – 1)/0.0252(1+0.0252)26]}

Present Worth = $707,194.35

Case 4: Infinite Period

Present Worth = 168,000(P/A, 2.52%, 4) + 21,000(A/F, 2.52%, 5)(P/A, 2.52%, n = infinite)

Present Worth = 168,000[((1+0.0252)4 – 1)/0.0252(1+0.0252)4] + {21,000 × [0.0252/((1 + 0.0252)5 – 1)] × (1/0.0252)}

Present Worth = $790,180.00


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