Question

    300 liters of oil was poured into a tank, which was still 40% empty. How much oil must be poured into the tank to fill it to the brim? 

    A 150 L Correct Answer Incorrect Answer
    B 180 L Correct Answer Incorrect Answer
    C 120 L Correct Answer Incorrect Answer
    D 200 L Correct Answer Incorrect Answer

    Solution

    Empty tank = 40% Fill tank = 60% 60 = 300 liters 1 = 5 unit 40 = 5×40= 200 liters

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