If 5 tyres
were used on a car which has travelled 20,000 miles, how many miles did each
tyres sustain, if all the tyres were used equally in sustaining this mileage?
Answer: When the
car travels one mile each of 4 tyres sustain one mile’s use.
Therefore, when a car has travelled 20,000 miles, a total of
80,000 tire miles has been used.
Since this mileage has been gathered on 5 tires, each tire
must have been used for 16,000 miles.
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