In a 500 m race, the ratio of the speeds of two contestants A and B is 3 : 4. A has a start of 140 m. Then, A wins by:

A.60 m
B.40 m
C.20 m
D.10 m

• To reach the winning post A will have to cover a distance of (500 - 140)m, i.e., 360 m.
  
  While A covers 3 m, B covers 4 m.
  
  While A covers 360 m, B covers 4 x 360 m = 480 m.
  3
  Thus, when A reaches the winning post, B covers 480 m and therefore remains 20 m behind.
  
  A wins by 20 m.
• 11 years agoHelpfull: Yes(12) No(2)
• A wil have to cover the distance 500-140=360m
  therefore 3/4 =360/x
  x = 360* (4/3)
  x= 480
  so 500 - 480 = 20
  A wins by 20m.
• 10 years agoHelpfull: Yes(7) No(0)
• A will have to cover the distance 500-140=360m
  therefore 3/4 =360/x
  x = 360* (4/3)
  x= 480
  so 500 - 480 = 20
  A wins by 20m.
• 10 years agoHelpfull: Yes(3) No(1)