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1. A railway passenger counts the telegraph poles on the rail road as he passes them. The telegraph poles are at a distance of 50 metres. What will be his count in 4 hours, if the speed of the train is 45 km per hour.
Thus, the no. of poles,
= = 3600 [Poles are at the distance of 50 m.]
Solution:
In train he travels = 4 × 45 = 180 km = 180000 mThus, the no. of poles,
= = 3600 [Poles are at the distance of 50 m.]