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    Question

    β€˜K’ and β€˜L’ are going from place β€˜X’ to

    place β€˜Y’, which is 1100 km apart. If β€˜K’ started 3 hours after β€˜L’ but both of them reached β€˜Y’ at the same time, then find the speed of β€˜L’. The difference between their speeds is 20 km/hr.
    A 95 km/hr Correct Answer Incorrect Answer
    B 85 km/hr Correct Answer Incorrect Answer
    C 80 km/hr Correct Answer Incorrect Answer
    D 75 km/hr Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let the speed of β€˜K’ be β€˜b’ km/hr Therefore, speed of β€˜L’ = (b – 20) km/hr According to the question, Since speed cannot be negative therefore, b = 100 Therefore, speed of β€˜L’ = b - 20 = 80 km/hr

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