A sum, at the compound rate of interest, becomes 2 1/ 2 times in 6 yr. The same sum becomes what times in 18 yr?

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Accepted Answer

If sum is P, then P becomes 5P/2 in 6 yr. 5P/2 becomes 25P/4 in 12 yr. 25P/4 becomes 125P/8 in 18 yr. The sum becomes 125/8 times in 18 yr.

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