<PRE><B>Question 606302</B>
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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