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September 17, 2014

Homework Help: algebra 1

Posted by Robbie on Tuesday, March 29, 2011 at 10:14am.

plz explain how to do this in detail:

using only 39 cent and 24 cent stamps, charlie put $7.14 postage on a package he mailed to his sister. if he used twice as many 39 cent stamps as 42 cent stampsp, how many 24 cent stamps did he use??

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