It takes eight hours for a 600 km journey, if 120 km is done by train and the rest by car. It takes 20 minutes more, if 200 km is done by train and the rest by car. The ratio of the speed of the train to that of the cars is:
1)2 : 3
2)3 : 2
3)3 : 4
4)4 : 3

• 3:4
  
  If T is speed of train and C is speed of car, then
  
  120/ T + 480/C =8
  and
  200/T + 400/C = 8+ 20/60 = 25/3 hrs
  
  solving these , we get
  
  C = 80 kmph
  and T = 60 km/hr
  Ratio of the speed of the train to that of the cars is: 60/80 = 3/4
  
  or 3:4
• 13 years agoHelpfull: Yes(5) No(1)
• 60/80 = 3/4
• 10 years agoHelpfull: Yes(1) No(2)