Discussion :: Races and Games
- In a kilometer race, A beats B by 40 meters or by 5 seconds. What is the time taken by A over the course?
Answer : Option B
Explanation :
A runs 1km = 1000 m, it means B runs 1000 - 40 = 960 meters
Time is taken by B for 40 meters = 5 seconds
Time is taken by B for 960 meters = × 960=120 seconds
The time in which B covered 960 meters, A has covered 1000 meters.
∴ A's time over the course = 120 seconds
= 2 minutes
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