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    Question

    If Seema had run at a speed of 14 km/hr instead of 7

    km/hr, she would have covered 20 km more distance.  What would have been the actual distance covered by her? 
    A 40 Km Correct Answer Incorrect Answer
    B 20 Km Correct Answer Incorrect Answer
    C 26 Km Correct Answer Incorrect Answer
    D 30 Km Correct Answer Incorrect Answer

    Solution

    Let the time she ran be t hours. Case 1: At 7 km/h , Distance = 7 × t = 7t Case 2: At 14 km/h, Distance = 14 × t = 14t Acc to the question: If she had run at 14 km/h, she would have covered 20 km more than at 7 km/h: 14 t = 7t + 20 t = 20/7 Now, the actual distance she ran at 7 km/h: 7 x t = 7 x 20/7 = 20 km

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