A can run 4 times as fast as B and gives B a start of 60 m. How long should the race course be so that A and B might reach in the same time?

a) 70 m
b) 60 m
c) 80 m
d) 65 m

• Speed of A:Speed of B=4:1
  
  means in a race of 4m A gains 3m.
  
  then in a race of 60m he gains 60*(4/3)
  I.e 80m
• 8 years agoHelpfull: Yes(2) No(3)
• A:B=4:1
  A gains 3m for a race of 4m
  Therefore 60m will be gained in 4/3*60=80m
• 7 years agoHelpfull: Yes(2) No(0)
• c) 80
  60(4/3)
• 8 years agoHelpfull: Yes(1) No(0)