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Mathematics 7 Online
OpenStudy (sepeario):

An oval running track has a straight stretch of 120m and semicircular ends of diameter 50m. The lanes are 85m wide. How much of a head start must runner 1 in the innermost lane give runner 2 in the second lane in order for them to cover equal distances to the finish? (assume both runners race along the inside edge of their lanes)

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