SOLUTION: Twenty-five feet of copper tubing weights 14 pounds. How much will 140 feet of the same tubing weigh?

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Question 79841: Twenty-five feet of copper tubing weights 14 pounds. How much will 140 feet of the same tubing weigh?
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
25/14=140/x cross multiply
25x=14*140
25x=1960
x=1960/25
x=78.4 pounds for the 140 feet of copper tubing.