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ameriland

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ameriland
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...
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ameriland
An apprentice builds a machine, it takes him 15 hours longer as 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...

1 to 2 of 2