Two stations A and B are 110 km apart on a straight line. One train starts from A at 7 a.m. and travels towards B at 20 kmph. Another train starts from B at 8 a.m. and travels towards A at a speed of 25 kmph. How many hours after the start, the train which starts from station A, will meet the other train which is coming from station B?

Question

Two stations A and B are 110 km apart on a straight line. One train starts from A at 7 a.m. and travels towards B at 20 kmph. Another train starts from B at 8 a.m. and travels towards A at a speed of 25 kmph. How many hours after the start, the train which starts from station A, will meet the other train which is coming from station B?,

MARKS App · Accepted Answer

Suppose they meet x hours after 7 a.m. Distance covered by A in x hours = 20 x km. Distance covered by B in ( x – 1 ) hours = 25 ( x – 1 ) k m 20 x + 25 ( x - 1 ) = 110 45 x = 135 ⇒ x = 3 hr

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