The length of the Lucknow mail is 120 m and that of Punjab mail is 80 m. These
two trains are running in the same direction with velocities of 40 km/h and 50
km/h respectively. The time taken by them to cross each other is
Answers
ACTUALLY OPTIONS WERE ALSO THERE MATE AS I HAVE ALREADY SOLVED THIS PROBLEM A FEW DAYS AGO....BUT NO WORRY,I AM PROVIDING ANSWER WITH THE OPTION.....PLEASE MARK MY ANSWER AS BRAINLIEST AND GIVE IT A THANKS AND A 5 STAR FOR MY EFFORTS PLEASE .....
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Correct Option: B
Relative speed = 50 - 40 = 10 km/h = 50/18 m/s
∴ Time taken = Sum of length of the trains / Relative speed
= (200/50) x 18 = 72 sec.
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Answer:YES MATE ALOK16022006 IS COMPLETELY RIGHT.HE HAS WROTE THE CORRECT ANSWER AND I HAVE VERIFIED IT WITH MY TEXTBOOK.HE HAS ALSO SOLVED IT.SO HE MUST DESERVE A BRAINLIEST ANSWER SO PLEASE MARK HIM AS BRAINLIEST AND GIVE HIM A THANKS AND 5 STAR PLEASE OK....