You will need this formula: Years = ln (Total / Principal) / rate (where "ln" means natural logarithm) and we'll use $100 and $200 for beginning and ending amount Years = ln (200 / 100) / rate Years = 0.69314718056 / .052 Years =
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13.3297534723
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Rounding to the nearest tenth of a year: Years =
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13.3
The answer for this problem is 2 since it is not specified whether it is adjacent to the right or adjacent to the left. If it is adjacent to the right, the answer is:
