Question

    Ratio of speeds of ‘A’ and ‘B’ is 5:7, respectively. If they participate in a 350-metre race and ‘B’ gives ‘A’, a head start of ‘m’ metres, then they finish the race at the same time. Find the value of ‘m’.

    A 110 metres Correct Answer Incorrect Answer
    B 120 metres Correct Answer Incorrect Answer
    C 100 metres Correct Answer Incorrect Answer
    D 130 metres Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the distance covered by ‘A’ in the time ‘B’ covers 350 metres be ‘x’ metres (x/350) = (5/7) Or, x = 250 So, m = 350 – 250 = 100 metres

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