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ameriland

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ameriland

Math Question...

An apprentice builds a machine, it takes him 15 hours longer than the master. If both work together they are finished 5 hours earlier than when the master does it alone. How long does it take for the...
15:54 Wed 14th May 200813 answers, last by squarebear 11:38 Thu 15th May 2008

Only 1 question