New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    The "Sunrise" train departs from City A at a specific

    time. Four hours later, the "Twilight" train leaves the same station and travels in the same direction at a speed of 120 km/hr. If the "Twilight" train catches up to the "Sunrise" train in 12 hours, what is the speed of the "Sunrise" train?
    A 55 km/hr Correct Answer Incorrect Answer
    B 75 km/hr Correct Answer Incorrect Answer
    C 90 km/hr Correct Answer Incorrect Answer
    D 65 km/hr Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    ATQ, Distance travelled by Twilight in 12 hours = 12 × 120 = 1440 km Speed of Sunrise Train = 1440/(12 + 4) = 1440/16 = 90 km/hr

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