Posted by **Julie** on Tuesday, October 13, 2009 at 10:57pm.

Many tires come with 13/32 inch of tread. The first 2/32 inch wears off quickly(say during the first 1000miles). From then on the tire wears uniformly. A tire is considerd "worn out" when on 2/32 inch of tread is left.

a. how many 32nds of an inch of usuable tread does a tire have after 1000miles?

b. A tire has traveled 20,000 miles and has 5/32 inch of tread remaining. At this rate how many total miles should the tire last before it is considered worn out?

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