Given a choice of two investments would you choose one that
Solution
Option 1 :
10% Return in 5 years
Lets assume you have $1000 to invest for 5 years.
At the end of the 5th year, you will get $100 as interest (i.e. 10% of $1000)
Option 2 :
Given that, 0.2% per month ie 0.2% x 12 = 2.4% per annum
Lets assume you have $1000 to invest for 5 years.
Case 1 : If you earn Simple Interest, then you earn
Simper Interest = Principal x Number of Years x rate of Interest
i.e. SI = $1000 x 5 x 2.4% = $120
Case 2 : If you earn compound Interest, then you earn
Compound Interest = Principal x (1 + Interest rate )^ Number of year - Principal
CI = $1000 x (1.024)^5 - 1000 = $125.89
(I) The return of 10% over 5 year period provides an annual return of 2% per annum [10%/5]
(II) The return of 0.2% per month over 5 year period provides an annual return of 2.4% per annum [0.2% x 12]
(III) The investment that pays 0.2% per month compounded annually is preferable

