Question

    Metal mixture ‘C’ consists of mercury and platinum in

    the ratio 2:3. Another alloy ‘D’ includes platinum and titanium in the ratio 1:4. If 25 grams of ‘C’ and 50 grams of ‘D’ are mixed, what is the final ratio of mercury, platinum and titanium?
    A 5:15:16 Correct Answer Incorrect Answer
    B 2:5:8 Correct Answer Incorrect Answer
    C 19:12:21 Correct Answer Incorrect Answer
    D 16:15:6 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Weight of mercury in 25 grams of 'C' = 25 × (2/5) = 10 grams

    So, weight of platinum in 25 grams of 'C' = 25 − 10 = 15 grams

    Weight of platinum in 50 grams of 'D' = 50 × (1/5) = 10 grams

    So, weight of titanium in 50 grams of 'D' = 50 − 10 = 40 grams

    So, total weight of platinum = 15 + 10 = 25 grams

    So, required ratio = 10:25:40 = 2:5:8

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