1.

Two trains of length 100 m and 200 m are 100 m apart. They start moving towards each other on parallel tracks, at speeds 54 kmph and 72 kmph. In how much time will the trains cross each other?

A. 57/7 sec
B. 80/7 sec
C. 20/7 sec
D. 60/7 sec
Answer» C. 20/7 sec


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