Question

Two trains start from points A and B, 300 km apart, and travel towards each other. Train 1 starts from A at 60 km/h, while Train 2 starts from B at 40 km/h. Train 1 stops for 30 minutes after every 2 hours of travel. After how much time will they meet?

A 3 hours
B 4 hours
C 5 hours
D 6 hours
E None of these
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