Alan will win. It will take 12 years.
We have given that,
Ted and Allan are in a race to double their money. ted feels he will win if he puts his $4,000 into a savings account offering 4.5% interest compounded annually.
alan feels he will win because he intends to put his $1,000 into a savings account offering 6% interest compounded annually.
Ted:
4,000 at 4.5% interest compounded annually
A method of calculating and adding interest to an investment or loan once a year, rather than for another period.
Alan:
1,000 at 6% interest compounded annually
Rule of 72: divide 72 by the compound annual interest rate
Ted: 72/4.5% = 16 years
Alan: 72/6% = 12 years
Alan will win. It will take 12 years.
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