In a 100 m race, A beats B by 10 m and C by 13 m. In a race of 180 m, B will beat C by:

A. 5.4 m B. 4.5 m
C. 5 m D. 6 m

• D.6m
  
  speed of A, B and C be s1,s2 and s3 resp.
  
  then, for 100m race,
  
  100=s1*t
  90=s2*t
  87=s3*t(t= time taken by A to complete race)
  from here, we get ratio of speeds of B and C
  
  s2/s3=90/87=30/29
  
  for 180m race,
  
  180=s2*T
  (180-x)=s3*T(T= B's time to complete race, x= distance between B&C)
  
  x=6m
• 12 years agoHelpfull: Yes(4) No(2)
• here at time t
  a=100 m ,b=90 m,c=87 m
  now
  b beats c by 3 m in 90 m coz at that time b=90 & c=87
  90 m = 3 m
  1 m = 3/90
  for 180 m race
  180 m=(3/90)*180
  = 6m
  
  
  now for
• 10 years agoHelpfull: Yes(1) No(0)