Question

    A car travel 20km/h for 30 min and at x km/h for 45 min. If the average speed of the car for entire journey is 14 km/h find the value of x.

    A 2:3 Correct Answer Incorrect Answer
    B 4:9 Correct Answer Incorrect Answer
    C 11:3 Correct Answer Incorrect Answer
    D 9:5 Correct Answer Incorrect Answer

    Solution

    20km/h            x km/h             14km/h 30min              45min 2          :           3 =2:3

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