Question

According to the rule of 72, if Arielle invests $100, $200, and $2000 into three

separate accounts with the same interest rate, which amount will double
fastest?
OA. $2000
OB. $100
OC. All will double at the same rate.
O D. $200

Answer 1

Answer: b. $100

Step-by-step explanation: According to the rule of 72, you will be able to know when an investment will double if you divide 72 by the annual interest rate.

in this case since the interest rate are the same for all three amount, the smallest initial amount will double fastest since it requires the least amount of time to double.