cpmaster89 cpmaster89

09-12-2017
Mathematics

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In an alloy of copper and tin, there is 85% of copper. How much of this alloy do you need in order to get 1 13/32 lb of tin?

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quenbarr quenbarr

19-12-2017

The solution for this question to determine how much of this alloy do you need in order to get 1 13/32 lb of tin.If the alloy is 85% copper, then it is 15% tin. So:

15n/100 = 45/32
4500 = 480n
n = 9.375 lbs. of the alloy to get 1.40625 lbs of tin.

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