A bus departed from the fleet at a speed of 85 km / h. When he walked 170 km, the second bus departed from the same

A bus departed from the fleet at a speed of 85 km / h. When he walked 170 km, the second bus departed from the same fleet in the opposite direction at a speed of 68 km / h. What time was each bus traveling at a time when the distance between them became 782 km?

1) 170: 85 = 2 (h) – the first bus went alone
2) 782 – 170 = 621 (km) – traveled simultaneously
3) 85 + 68 = 153 (km / h) – removal speed with simultaneous movement
4) 621: 153 = 4 (h) – drove at the same time (rode the second)
5) 4 + 2 = 6 (h) – rode first
Answer: 6 hours, 4 hours

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