Posted by **algebrajunkie** on Tuesday, April 26, 2011 at 8:31pm.

Brandon has 3 inventions, one saves 30 percent on fuel; a second saves 45% a third saves 25%. If he uses all three inventions at once, what percent can he save on fuel?

do I add all of the percentages together and divide by 3?

=1/3 or 3%? or is it 100%?

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