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April 16, 2014

Homework Help: algebra

Posted by Anonymous on Monday, May 9, 2011 at 8:32pm.

a disk jockey must play 14 commercial spots during one hour of radio show, each commercial is eiter 30 seconds or 60 seconds long. If the total commercial time during one hour is 11 minutes, then ow many 30 second commercials were played that hour?

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