In a 1 km race A beats B by 125 m, and in another 1 km race B beats C by 80 m. By how many metres will A beat C over 1 km?
Correct answer A. 195 m
Explanation
When A runs 1000 m, B runs 875 m, and C runs 875 × 920/1000 = 805 m. A beats C by 1000 − 805 = 195 m.
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