Question

    A 2 Correct Answer Incorrect Answer
    B 1 Correct Answer Incorrect Answer
    C 3 Correct Answer Incorrect Answer
    D 3/2 Correct Answer Incorrect Answer

    Solution

    = 5.6×0.36+0.42×3.2 / 0.8×2.1 = 2.016+1.3444 / 1.68 = 3.36 / 1.68 = 2

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