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The following questions illustrate non-annual compounding. a) One hundred dollar

ID: 2722122 • Letter: T

Question

The following questions illustrate non-annual compounding.

a) One hundred dollars is placed in an account that pays 12 percent. How much will be in the account after one year if interest is compounded annually, semiannually, or monthly?

b) One hundred dollars is to be received after one year. What is the present value of this amount if you can earn 12 percent compounded annually, semiannually, or monthly?

The following questions illustrate non-annual compounding.

a) One hundred dollars is placed in an account that pays 12 percent. How much will be in the account after one year if interest is compounded annually, semiannually, or monthly?

b) One hundred dollars is to be received after one year. What is the present value of this amount if you can earn 12 percent compounded annually, semiannually, or monthly?

Explanation / Answer

Value of saving = $100

Annual Interest rate = 12%

Value of saving if compound annually

Value after one year = $100 × (1 + 12%)

                                     = $112

Hence, value of saving if compound annually is $112.

Value of saving if compound Semiannually

Value after one year = $100 × (1 + 12%/2) ^2

                                     = $112.36

Hence, value of saving if compound semiannually is $112.36

Value of saving if compound Quarterly

Value after one year = $100 × (1 + 12%/4) ^4

                                     = $112.55

Hence, value of saving if compound quarterly is $112.55

Amount received after one year = $100

Present value if compound annually

Present value = $100 / (1 + 12%)

                       = $89.29

Hence, present value if compound annually is $89.29.

Present value if compound Semiannually

Present value = $100 / (1 + 12%/2) ^2

                      = $89

Hence, Present value if compound semiannually is $89

Present value if compound Quarterly

Present value = $100 × (1 + 12%/4) ^4

                       = $88.85

Hence, present value if compound quarterly is $88.85