<PRE><B>Question 254934</B>
An alloy of tin and copper has 6 pounds of copper for every 2 pounds of tin. 
If 200 pounds of this alloy are made, how many pounds of tin are used?
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6:2 is the same as 6x:2x where 2x is the amount of tin
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Equations:
2x + 6x = 200
8x = 200
x = 25
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Amount of tin = 2x = 2*25 = 50 lbs.
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Cheers,
Stan H.
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a. 25
b. 50 
c. 100
d. 125
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