5. Person travel to a hill, if he goes from A and B with speed of 4 kmph and returns back to B with speed of 5 kmph. What is his average speed of journey? a) 4.5 mph b) 4.44 mph c) 9 mph d) 4.245 mph

• AVERAGE SPEED=2XY/X+Y;
  X=4
  Y=5
  AVG. SPEED=2*4*5/(4+5);
  ANS 40/9
• 12 years agoHelpfull: Yes(3) No(0)
• Av speed = 2*4*5/9 = 40/9 = 4.44 mph
• 12 years agoHelpfull: Yes(2) No(0)
• 2*4*5/(4+5)=4.44
  option b)
• 6 years agoHelpfull: Yes(0) No(0)