The distance between charu's and mani's places is 120km. charu traveled the whole distance from her place to mani's at 30km/hr but returned at 40km/hr.her average speed for the whole journey is(approx)
(A)36km/hr (B)37km/hr (C)33km/hr (D)34km/hr (E)35km/hr

• avg speed= 2*x*y/(x+y)=2*30*40/(30+40)=34.28
• 14 years agoHelpfull: Yes(6) No(0)
• 2*x*y/x+y=34 ans
• 14 years agoHelpfull: Yes(2) No(1)
• avg speed is(2*30*40)/70=34.29km/hr
• 12 years agoHelpfull: Yes(1) No(0)
• 34km/hr
• 14 years agoHelpfull: Yes(0) No(1)
• 34
• 14 years agoHelpfull: Yes(0) No(0)
• 34 km/hr approx
• 14 years agoHelpfull: Yes(0) No(0)
• total distance = 240 KM
  Total Time = 7 hrs
  So average speed is 240/7 = 34.29km/hr
• 4 years agoHelpfull: Yes(0) No(0)
• 2x+3y
• 2 years agoHelpfull: Yes(0) No(0)