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    Question

    If the speed ratio of A, B and C while covering the same

    distance is 7 : 3 : 1 then find the ratio of time taken by them.
    A 3:7:21 Correct Answer Incorrect Answer
    B 4:5:10 Correct Answer Incorrect Answer
    C 7:3:1 Correct Answer Incorrect Answer
    D 3:7:9 Correct Answer Incorrect Answer

    Solution

    According to the question, Speed ratio of A, B and C = 7 : 3 : 1 Let distance = 21 units. When distance is same, then Speed α 1/Time. Time ratio of A, B and C = 3 : 7 : 21

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