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Serena and Venus Williams start 150 m apart and begin running towards each other. Serena has a speed of 7.5 m/s and Venus has

Serena and Venus Williams start 150 m apart and begin running towards each other. Serena has a speed of 7.5 m/s and Venus has a speed of 5.0 m/s. How long does it take for them to meet? A. 9 s B. 10 s C. 11 s D. 12 s CA B C D

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