Explanation:
By 8:00 AM, the first person covers 40 * 2 = 80 km. Relative speed = 60 - 40 = 20 km/h. Time to meet = 80 / 20 = 4 hours. Distance from A = Speed of second person * Time = 60 * 4 = 240 km.
Excluding minor platform corridor stops, the speed of an express route train is 84 km/h, and including stops it tracks at 70 km/h. How many minutes does it spend resting at stops per hour?
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