Question
The distance covered by A in 10 hours is 27 km less than the distance covered by B in 12 hours. The distance covered by B in 8 hours is 7(1/2) km more than the distance covered by A in 9 hours. If they start moving towards each other from the two ends of a road, 4.2 km in length, at the same time, they will cross each other after:
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