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October 20, 2014

Homework Help: Science/Mathamatics

Posted by the shadow on Sunday, October 1, 2006 at 12:55pm.

A typical copper ore in Canada contains about 2% of the metal. If the annual production of mined copper is about 700000 t, how much ore must be mined annually?


Money,time,


2% = 700000
THEREFORE 100% = ?

100/2 X 700000 = 35000000t

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