Posted by **Katy** on Thursday, February 19, 2009 at 10:38pm.

Write each percent change as a ratio comparing the result to the original quantity. Then write it as a constant multiplier.

Book's example:

3% increase, 103/100, 1+0.03

I don't understand double digit numbers. The one that I have to solve is an 11% decrease. Tips, hints-anything would be GREATLY appreciated.

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