Homework Help: college math

Posted by Lourane on Tuesday, June 19, 2012 at 10:58pm.

Last month Bill's electric bill was $80.77. This month it is $69.06. what is the percent decrease?

$80.77 - $69.06 = $11.71 , I don't understand multiply decimal by 100 to get the decrease

college math - Ms. Sue, Tuesday, June 19, 2012 at 11:02pm
You only did the first part.

You forgot to divide 11.71 by 80.77

100 (11.71 / 80.77) = ?
college math - Gigi, Wednesday, October 24, 2012 at 4:04pm
Whats the answer

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