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I collect baseball cards. I do not sell any cards and I let my collection grow. The number of cards in my collection grows at 5% per year. How long will it take for my collection of cards to double in
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I collect baseball cards. I do not sell any cards and I let my collection grow. The number of cards in my collection grows at 5% per year. How long will it take for my collection of cards to double in quantity?

User Monsabre
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1 Answer

5 votes

Answer: 14.4 years

Step-by-step explanation:

You can use the Rule of 72 to find out.

The Rule of 72 is a very useful formula that shows the amount of time it would take an amount to double given a certain growth rate.

The formula is:

= 72 / Growth rate in whole numbers

= 72 / 5

= 14.4 years

Approximately 14.4 years

User Peter Weyand
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5.4k points
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