Question

    A mixture weighing 600 grams consists of sand and cement

    in a ratio of 3:7. If an additional 20 grams of sand and 80 grams of cement are added to it, what will be the new ratio of cement to sand in the mixture?
    A 4:1 Correct Answer Incorrect Answer
    B 5:2 Correct Answer Incorrect Answer
    C 3:4 Correct Answer Incorrect Answer
    D 5:6 Correct Answer Incorrect Answer
    E 7:8 Correct Answer Incorrect Answer

    Solution

    Quantity of sand in mixture = 3/10 X 600 = 180 grams Quantity of cement in mixture = 600 - 180 = 420 grams According to question, Desired ratio = (420 + 80) :(180 + 20) = 5:2 Hence, option b.

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