40.5k views
5 votes
Using the rule of 72, t = StartFraction 72 Over r EndFraction, how long will it take for the principal to double with an annual compound interest rate of 6%?

6 years
9 years
12 years
15 years

User Jdknight
by
4.9k points

2 Answers

6 votes

Answer: 12 years I suppose.

User Dodinas
by
5.2k points
4 votes

Answer:

C. 12 years

Explanation:

User Dpetruha
by
5.6k points
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