Question

A train is running at a speed of 48km/hr a passenger counts the telephone posts along the line as he passes them if the posts are 50m apart how many post he will cross per minute

Answer 1

Speed = 48km/h = 800m/minute
Distance travelled in one minute = 800m

Telephone posts are 50m apart..
So,
Number of telephone posts the passenger counts in one minute = 800/50 = 16