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    Question

    A Bus moving at a speed of 's' km/h can pass a

    stationary person in 16 seconds and a tunnel Bridge that is 240 meters long in 28 seconds. Determine the value of 's'.
    A 45 Correct Answer Incorrect Answer
    B 85 Correct Answer Incorrect Answer
    C 36 Correct Answer Incorrect Answer
    D 72 Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let length of Bus be тАШlтАЩ metres According to question; So, l = 16 ├Ч s ├Ч (5/18) ------(i) And, l + 240 = 28 ├Ч s ├Ч (5/18) ---------(ii) From (i) and (ii), Or, 16 ├Ч s ├Ч (5/18) = 28 ├Ч s ├Ч (5/18)тАУ 240 Or, 12 ├Ч s ├Ч (5/18) = 240 Or, s = 72

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