When the distance is constant, then speed is inversely proportional to time. It is extremely useful to know these proportionality in order to solve problems at a quicker pace. If the ratio of the speeds of A and B is a:b, then the ratio of the times taken by them to cover the same distance is (1/a):(1/b) = b:a.

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Answer:When the distance is constant, then speed is inversely proportional to time. It is extremely useful to know these proportionality in order to solve problems at a quicker pace. If the ratio of the speeds of A and B is a:b, then the ratio of the times taken by them to cover the same distance is (1/a):(1/b) = b:a.

Step-by-step explanation:Please mark as brainliest answer and follow me please and thank me please Because I am a very good boy