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Mr. Kyeremeh has a daughter entering the university next year. His daughter expects to remain in school for ten years and receive a PhD. Mr. Kyeremeh wishes to provide $1000 a year to her daughter for entertainment expenses. Assuming 3. 5% effective annual interest rate, how much does the father has to deposits today to provide ten annual payment starting one year from now and continuing for ten years? ii) In the previous problem, if the daughter saves the income from her father in an account also paying 3. 5% effective annual interest, how much will she have when she receives the final $1000 payment? b) Kofi deposits $1000. 00 into an account paying 4% compounded quarterly. At the end of three years, he deposits an additional $1000. 0. Ama deposits $X into an account with force of interest St =1/6+t. After five years, Kofi and Ama have the same amount of money. Find X

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Answer: i) We can use the present value of an annuity formula to determine how much Mr. Kyeremeh needs to deposit today:

PV = A * [(1 - (1 + r)^-n)/r]

Where PV is the present value, A is the annual payment, r is the effective annual interest rate, and n is the number of periods.

In this case, A = $1000, r = 3.5%, and n = 10. We can substitute these values into the formula to get:

PV = $1000 * [(1 - (1 + 0.035)^-10)/0.035] ≈ $8,578.32

Therefore, Mr. Kyeremeh needs to deposit approximately $8,578.32 today to provide his daughter with $1000 a year for ten years, assuming a 3.5% effective annual interest rate.

ii) If the daughter saves the income from her father in an account also paying 3.5% effective annual interest, then the future value of the ten payments would be:

FV = A * [(1 + r)^n - 1]/r

Where FV is the future value, A is the annual payment, r is the effective annual interest rate, and n is the number of periods.

In this case, A = $1000, r = 3.5%, and n = 10. We can substitute these values into the formula to get:

FV = $1000 * [(1 + 0.035)^10 - 1]/0.035 ≈ $12,365.86

Therefore, if the daughter saves the income from her father in an account also paying 3.5% effective annual interest, she will have approximately $12,365.86 when she receives the final $1000 payment.

b) After three years, Kofi will have:

FV = P * (1 + r/n)^(n*t)

Where FV is the future value, P is the principal, r is the annual interest rate, n is the number of times interest is compounded per year, and t is the number of years.

In this case, P = $1000, r = 4%, n = 4 (since interest is compounded quarterly), and t = 3. We can substitute these values into the formula to get:

FV = $1000 * (1 + 0.04/4)^(4*3) = $1,343.92

After six years, Kofi will have:

FV = $1,343.92 + $1000 = $2,343.92

Now, we need to find the amount that Ama needs to deposit into her account such that after five years, she will have the same amount as Kofi.

Let X be the amount that Ama deposits. Then after five years, Ama will have:

FV = X * e^(∫0^5 1/6+t dt)

Where FV is the future value and e is the exponential function.

Simplifying the integral, we have:

FV = X * e^(ln(2)) = 2X

Therefore, we need to solve the equation:

2X = $2,343.92

X = $1,171.96

Therefore, Ama needs to deposit approximately $1,171.96 into her account to have the same amount as Kofi after five years.

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