# math

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Which is the best investment for three consecutive years?
a. A growth of 5% followed by a growth of 10% followed by a growth of 15%
b. A growth of 15% followed by a growth of 10% followed by a growth of 5%
c. Three years of growth at 10% per year.

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http://www.jiskha.com/display.cgi?id=1258772486

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Do you have to add them all together or multpily?

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did you not look at the solution I gave in the link ?

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yes, I saw that, but how do I get the answer on each line to compare them. Do I multiply each line, or add them.

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first one:
-you multiply them, brackets mean multiplication

1.05(1.1)(1.15)
= 1.05 x 1.1 x 1.15 = 1.32825

so that is an increase of 32.825%

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1.32825 is what I got for the b and 1.331 is what I got for c so I guess the answer would be c

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correct

c) has the largest number, thus the largest growth

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