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10 cards from this deck
Finding how long money must be invested to reach target amount
A=P(1+i)nA = P(1 + i)^nA=P(1+i)n
Accumulated amount (final value)
Principal amount (initial investment)
Interest rate as a decimal
Time period
n=log(A/P)log(1+i)n = \frac{\log(A/P)}{\log(1 + i)}n=log(1+i)log(A/P)
Round up to next whole number
Forgetting to convert to decimal (divide by 100)
Divide both sides by PPP: AP=(1+i)n\frac{A}{P} = (1 + i)^nPA=(1+i)n
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