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    Question

    The speeds of two trains are in the ratio 7:9. If the

    first train travels 315 km in 3 hours, how far will the second train travel in 5 hours?
    A 655 km Correct Answer Incorrect Answer
    B 680 km Correct Answer Incorrect Answer
    C 675 km Correct Answer Incorrect Answer
    D 685 km Correct Answer Incorrect Answer

    Solution

    Let the speeds of two trains are 7x, 9x Speed of first train =315/3 = 105 km/h 7x = 105 x = 15 speed of second train = 9x = 135 km/h distance covered in 5 hours by second train = 135×5 = 675 km

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