Latest Aptitude round Aptitude Question SOLUTION: two trains for palwal leave kanpur at 10a.m and 10:30 am and travel at the speeds of 60 kmph and 75 kmph respectively. After how many kilometers from kanpur will the two trains be

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(#M40157468) APTITUDE ROUND Numerical Ability question Trains problems Keep an EYE

two trains for palwal leave kanpur at 10a.m and 10:30 am and travel at the speeds of 60 kmph and 75 kmph respectively. After how many kilometers from kanpur will the two trains be together?

Asked In Aptitude round Natarajan (7 years ago)

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Devendra Marghade  (7 years ago)

150 km

Let after time t hrs both the trains meet, then
Distance travelled by train leaving at 10 am with speed 60 kmph in t hrs= Distance travelled by train leaving at 10:30 am with speed 75 kmph in t -½ hrs.
=> 60t = 75(t - ½)
=> 120t= 75(2t -1)
=> 30t= 75 or t=15/6 =2 ½
So calculating distance travelled by either first or second train 60t or 75(t- ½) = 60* 2½= 150 km.

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