Question

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​

Answer 1

(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