A can complete a journey in 10 hours . He travels first half of the journey at the rate of 21 km/hr and second half at the of 24 km/hr. find the total journey in km.

• t = 10 hrs
  s1 = 21 km/hr
  s2 = 24 km/hr
  Let d be the distance
  (d/2)/21 + (d/2)/24 = 10
  d/42 + d/48 = 10
  8d+7d = 3360
  15d = 3360
  d = 224 km
  
  Ans : 224 km
  
  
• 10 years agoHelpfull: Yes(8) No(0)
• 224 km.
  If total journey in km.= x ,then [(x/2)/21]+[(x/2)/24]= 10
  1/6[(x/7)+(x/8)]=10 ,x=224
  
• 10 years agoHelpfull: Yes(1) No(0)