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rohitloke

Aptitude test prblm...plz explain


Two trains leave from Delhi at 9:30 A.M and 10:00 A.M. and travel at 60kmph and 70 kmph resp. How many km from delhi will two trains be together? Is the ans 210 or 150...(the book says 150)and the method

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Two trains leave from Delhi at 9:30 A.M and 10:00 A.M. and travel at 60kmph and 70 kmph resp. How many km from delhi will two trains be together? Is the ans 210 or 150...(the book says 150)and the method I think u r missing some datau need the distance between the 2 stations to find where and how many kms after they will meet with respect to one station

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thanx for replying...the trains leave from same station.......when the second train leaves the station....the first train is 30km ahead(travelling at 60kph)......

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Two trains leave from Delhi at 9:30 A.M and 10:00 A.M. and travel at 60kmph and 70 kmph resp. How many km from delhi will two trains be together? Is the ans 210 or 150...(the book says 150)and the method

Ans is 210.

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Assume x kmx/60-x/70=1/2x(10)=1/2*60*70x=210

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