Some telegraph poles are placed 20 m apart. How many poles will a train pass in 3-
hours at 60km/h ?

• 9000
  
  Distance(in m.) in 3 hours train will cover=3*60000=180000 m.
  So poles passed which are placed 20 m. apart =180000/20=9000
• 8 years agoHelpfull: Yes(0) No(0)