Excluding stoppages, the speed of a bus is 54 km/hr and including stoppages, it is 45 km/hr. For how many minutes does the bus stop per hour ?

• 10 minutes
  
  By including stoppages, bus will cover 9km less..(54km -45km = 9km)
  
  Excluding stoppages, x = 54 kmph
  Including stoppages, y = 45 kmph
  Difference, z = 9km
  
  Time taken to cover that 9km(bus stops per hour(60minutes))= z/x(60minutes)
  = 9/54(60)
  = 1/6(60)
  = 10minutes.
• 12 years agoHelpfull: Yes(13) No(2)
• due to stoppages it cover 9km less
  time taken to cover 9km=9/54*60=10min
• 12 years agoHelpfull: Yes(4) No(3)