Posted by **Meg** on Sunday, November 22, 2009 at 10:12pm.

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.

- math -
**Reiny**, Sunday, November 22, 2009 at 10:24pm
http://www.jiskha.com/display.cgi?id=1258772486

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**Meg**, Sunday, November 22, 2009 at 10:29pm
Do you have to add them all together or multpily?

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**Reiny**, Sunday, November 22, 2009 at 10:31pm
did you not look at the solution I gave in the link ?

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**Meg**, Sunday, November 22, 2009 at 10:41pm
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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**Reiny**, Sunday, November 22, 2009 at 10:51pm
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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**Meg**, Sunday, November 22, 2009 at 11:20pm
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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**Reiny**, Sunday, November 22, 2009 at 11:22pm
correct

c) has the largest number, thus the largest growth

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