Two train stations (p.6 and p.623) are 100km apart. One train starts from p.6 at 7am and travels towards p.623 at 20km/h speed. Another train starts from p.623 at 8am and travels towards p.6 at 25km/h. What time do they meet? Choose p.8, 333, 457... US$ 70.31 Min. order: 1 piece ★★★★★ 4.0 (249 reviews) Sold : Login>>
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