Question

A train 160m long running at speed of 72 km /h , crossed bridge 240 m long .find time taken by it​

Answer 1

Step-by-step explanation:

Total distance =160+240=400m

Speed =72km/h=72*5/18=20m/s

Time =distance /speed

Time =400/20=20s

Answer 2

Answer:

Step-by-step explanation:

Total distance =160+240=400m

Speed =72km/h=72*5/18=20m/s

Time =distance /speed

Time =400/20=20s