- A19 s
- B20 s
- C21 s
- D18 s
Step-by-Step Solution
B covers the last 5 m in 1 s, so B's speed is 5 m/s and B's time is s. A takes s.
Answer: A) 19 s
In a 100 m dash A beats B by 5 m, or equivalently by 1 second. What is A's time?
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