SOLUTION: The amount of tread left on a tire varies inversely as the number of miles the tire has traveled. A tire that has traveled 47,000 mi has 5/16in of tread left. How much treat will b

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: The amount of tread left on a tire varies inversely as the number of miles the tire has traveled. A tire that has traveled 47,000 mi has 5/16in of tread left. How much treat will b      Log On


   

Question 606302: The amount of tread left on a tire varies inversely as the number of miles the tire has traveled. A tire that has traveled 47,000 mi has 5/16in of tread left. How much treat will be left on a tire that has traveled 30,000mi? Please help me!
Found 2 solutions by Alan3354, solver91311:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The amount of tread left on a tire varies inversely as the number of miles the tire has traveled. A tire that has traveled 47,000 mi has 5/16in of tread left. How much treat will be left on a tire that has traveled 30,000mi?
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Inverse has the form y = k/x
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5/16 = k/47000
k = 5*47000/16 = 14687.5
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t = 14687.5/30000
t =~ 0.4896 inch
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Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Let represent the amount of tread left. Let represent the miles traveled in thousands.



Plug in 5/16 and 47 for and , then solve for

Once you know the value of plug that value and the value 30 in place of into



then solve for

John

My calculator said it, I believe it, that settles it
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