Flash runs 114 times as fast as Zoom. If Flash gives Zoom a headstart of 60 m in a race, how far must the winning post be so that Flash reaches ahead of Zoom by 10 m?
The correct option is
A
350 m
Ratio of the speeds of Flash and Zoom = 54:1=5:4
Thus, in a race of 5 m, Flash gains 1m over Zoom.
1 m is gained by Flash in a race of 5 m.
Beat distance + start distance = 70m
70 m will be gained by Flash in a race of (51×70)m=350m
∴Winning post must be 350 m away from the starting point.