Question

las a head start of 100m.
5. In a kilometre race A beats B by 100m or 20 seconds even thouy.
What is the ratio between the speed of A and B? )​

Answer 1

As B is 20m behind when A completes the race, so B takes 4 secs to complete 20m. = 5m/s.

Total time of B = 100/5 = 20 secs.

Time of A = 20 - 4 = 16 seconds.

Ratio of both is 20:16

When simplified 5:4

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