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April 20, 2014

Homework Help: math

Posted by rebeca on Tuesday, October 2, 2007 at 12:32pm.

alter working 4 hours, frank has made 21 machine parts.at the same rate how many parts can he make in 7 hours? 4(21)/7,7(21),7(21)/4,7(4)/21,7(4)(21)?

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