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Train X starts from point A for point B ...

Train X starts from point A for point B at the point A and B are 300 km apart. The trains are moving at a constant speed atleast at 25km/h. The trains meet each other 3 hours after they start. If the faster train takes atleast 2 more hours to reach the destination. By which time will the slower train have definitely reached its destination? (Ignoring te length of trains in crossing?

A

4 hours after the start

B

7.5 hours after the start

C

6 hours after the start

D

none of these

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The correct Answer is:
B
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