SOLUTION: A pound of tin is worth $2 more than a pound of copper. Seven pounds of tin are mixed with 3 pounds of copper to make bronze that sells for $4.45 per pound. How much is a pound of
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Question 404761: A pound of tin is worth $2 more than a pound of copper. Seven pounds of tin are mixed with 3 pounds of copper to make bronze that sells for $4.45 per pound. How much is a pound of tin worth? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! A pound of tin is worth $2 more than a pound of copper.
Seven pounds of tin are mixed with 3 pounds of copper to make bronze that sells for $4.45 per pound.
How much is a pound of tin worth?
:
Let t = cost of 1 lb of tin
then
(t-2) = cost of 1 lb of copper
:
7t + 3(t-2) = 4.45(7 + 3)
7t + 3t - 6 = 4.45(10)
7t + 3t = 44.5 + 6
10t = 50.5
t =
t = $5.05 for a pound of tin
:
:
Check this
7(5.05) + 3(3.05) = 4.45(10)
35.35 + 9.15 = 44.50; confirms our solution of t = 5.05
