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Distance and time scaled by factors: ratio of speeds

This type of question, asked 2 times: 19 Jul 2023 S1, 27 Jul 2023 S2. All 2 questions below, oldest first.

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  1. Question 1

    19 Jul 2023 S1

    60
    On day one, with speed v, R covers a distance x, in t time. On the next day, he covers a distance 2.5x in 0.75t time. What is his speed the next day?

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  2. Question 2

    27 Jul 2023 S2

    56
    A certain distance is covered by a person at a certain speed. If another person covers 25%25\% of the distance in triple the time, the ratio of the speed of the first person to that of the second person is:

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