Question 641149
A pound of tin is worth $2 more than a pound of copper. Two pounds of tin are mixed with 8 pounds of copper to make bronze that sells for $3.65 per pound. How much is a pound of tin worth?
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let x= worth of 1 lb of copper
x+2= worth of 1 lb of tin
Weight of mixture to make bronze=2+8=10 lbs
..
8x+2(x+2)=10*3.65
8x+2x+4=36.5
10x=32.5
x=3.25
x+2=5.25
a pound of tin is worth $5.25