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| Math Central | Quandaries & Queries |
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Question from Peter, a student: A car is driven 40,000 miles using four tires and a spare tire. The tires are rotated so that each tire travels the same number of miles. What is the number of miles traveled by each tire? |
Hi Peter,
For each of the 40,000 miles of travel there were 4 tires on the road and hence there was 4 × 40,000 = 160,000 miles of tire wear. But this tire wear was spread evenly over 5 tires. How much wear is that on each tire?
Penny
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