when the speed of monorail is 60 km/hr it reaches on time.If speed is increased by 20 kms it reaches one hour earlier then how much distance does the monorail cover?

• 240 km
  
  Let the distance be d km, then
  Difference of time with 60 km/hr and 80 km/hr = d/60 - d/80 = 1
  => d=240
• 5 years agoHelpfull: Yes(0) No(0)