two trains 340m and 320 m long are running at a speed of 54 km per hour and 48 km per hour respectively in opposite directions how much time will they take to pass each other
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(340 + 320)m = 660m= total distance covered
54×5/18= 15m/sec
48×5/18= 13.33m/sec
Relative speed= 28.33m/sec
Time taken=(660/28.33)sec
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