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    Question

    A car travels 225 km in 5 hours at its normal speed. If

    it covers 90 km at this regular speed and then travels another 135 km at a speed that is 20% faster than usual, how much time does it take for the car to cover both distances?
    A 4 hours Correct Answer Incorrect Answer
    B 4 hours 30 minutes Correct Answer Incorrect Answer
    C 5 hours Correct Answer Incorrect Answer
    D 5 hours 30 minutes Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Actual speed of car = 225/5 = 45 km/hr Increased speed = 1.2 ├Ч 45 = 54 km/hr Time taken by car to cover the distances = (90/45) + (135/54) = 4 hours 30 minutes

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