An investment banker is responsible for investing a customer’s money into the greatest interest earning account. the banker has the following options for his customer’s investment: account a: interest rate = 4.8% term of investment = 10 years interest compounded monthly account b: interest rate = 4.9% term of investment = 10 years interest compounding continuously which account, a or b, will earn the customer the greatest amount of interest on his $150,000 investment? in your final answer, include all of your calculations.

The more often an interest rate is compounded, the better the return it provides. Continuous compounding at 4.9% would give a better return than monthly compounding at the same rate. Monthly compounding at 4.9% would give a better return than monthly compounding at 4.8%.

Account B will earn the customer the greatest amount of interest.


The question is a qualitative one; no calculations are necessary. One simply needs to observe that 4.9 > 4.8.

(If the numbers were reversed, monthly compounding at 4.9% would give a better return than continuous compounding at 4.8%. A calculation is needed in order to come to that conclusion.)