- A20 m
- B18 m
- C19 m
- D22 m
Step-by-Step Solution
When A finishes, B has run 180 m and C 162 m. B : C = 180 : 162 = 200 : 180. B beats C by 20 m. (18 = 38 − 20 is the trap.)
Answer: A) 20 m
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