A can run 22.5 m while B runs 25 m. In a kilometre race B beats A by:

A.
100 m
B.
111 1 m
9
C.
25 m
D.
50 m

• A.100m
  for every 25m B leads A by 2.5 m.... so at the end of 1000m (or 1KM)
  B leads A by (2.5*40)m (i.e) 100m
• 13 years agoHelpfull: Yes(6) No(2)
• B will complete his 1 km race into 40 turns of 25mtr.In 1 turn B beats A by 2.5m then in 40 turn B beats A by (2.5)x(40)=100m.So ans will be 100 m
• 13 years agoHelpfull: Yes(2) No(3)
• 1000/25=40 then
  22.5*40=900
  1000-900=100m
• 13 years agoHelpfull: Yes(1) No(1)
• because A runs 22.5m and B runs 25m
  So B is 25-22.5=2.5m ahead.
  Race is to 1000m
  hence total difference=2.5*(1000/25)
  => 2.5*40
  => 100 m.
  Hence (A) is correct.
• 13 years agoHelpfull: Yes(1) No(1)
• A. 100m
  Explaina: 1000m = 1km
  A can run 22.5m while B runs 25m.
  Therefore, When B runs 100m while A reach 90m (25*4=100;22.5*4=2=90)
  If B reach 1000m, on that time A reach 900m only
  (100*10=1000;90*10=900).
  So, the difference is B-A= (1000-900)
  = 100m
  
• 13 years agoHelpfull: Yes(0) No(1)
• 22.5m=81km
  25m=90km
  so B beats A by 9 km
  9 km=2.5m
  there is no option i think qstn is wrong
• 13 years agoHelpfull: Yes(0) No(2)
• the answer is A.
  for every 25 m run by B, A will be short of 2.5m in a kilometre race can be devided into 40 25m races means (40*25=1000), threfore 40*2.5m short, so B will beat A by 100ms
• 13 years agoHelpfull: Yes(0) No(0)
• A. 100
  when B completes 100m(ie 25*4),then A will complete 90m(ie 22.5*4).That means there is a difference of 10m for every 100m.
  Then for 1000m, 10*10 = 100m difference.
  Therefore 1 KM race B beats A by 100m.
• 12 years agoHelpfull: Yes(0) No(0)
• since for every 25 mtr B ahead to A = 2.5 mtr
  
  the total race is upto 1km = 1000mtr
  
  therefore , B leads by A = 2.5*1000/25 = 100mtr.
• 8 years agoHelpfull: Yes(0) No(0)
• A is lagging by 2.5m in every 25m
  so 2.5+2.5+2.5+2.5 = 10....is for 100 meters
  for 1000 meters 10*10=100
• 7 years agoHelpfull: Yes(0) No(0)
• B beats A by 100 m
• 6 years agoHelpfull: Yes(0) No(0)