Ratio of Ore to Copper
Date: 9/4/96 at 19:14:27 From: Anonymous Subject: Ratio of Ore to Copper A certain ore contains 2 percent copper. How much ore is needed to obtain 24 tons of copper?
Date: 9/4/96 at 21:47:51 From: Doctor Robert Subject: Re: Ratio of Ore to Copper Let x be the number of tons of ore needed. If you have x tons of ore, then you have .02x tons of copper. So, .02x = 24. Dividing both sides by .02 you get x = 1200 tons. You need 1200 tons of 2 percent copper ore to get 24 tons of copper. -Doctor Robert, The Math Forum Check out our web site! http://mathforum.org/dr.math/
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