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December 21, 2014

December 21, 2014

Posted by **Mack** on Tuesday, June 26, 2007 at 7:42pm.

20.

How did they get that answer??

of means times. Is means equals.

DecimalPercent x 80= 16

divide both sides by 80

decimal percent = 16/80= .2

percent=decimalpercent x 100

There is a formula for that -- but I never learned it. I like to set up a proportion for this kind of problem.

Let x equal the number out of 100 (the percent).

x / 100 = 16 / 80

x = 20

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