Multiple Choice Questions on In one alloy there is 60 gold in its total mass while in another alloy it is 35 12 kg of the first a........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

In one alloy there is 60 gold in its total mass while in another alloy it is 35 12 kg of the first a...........

Quantitative Aptitude ( CCS) Mixture and Alligation
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    In one alloy there is 60% gold in its total mass, while in another alloy it is 35%. 12 kg of the first alloy was melted together with 8 kg of the second one to form a third alloy. Find the percentage of gold in the new alloy.

    50%

    Correct Answer

    49%

    Incorrect Answer

    45%

    Incorrect Answer

    48%

    Incorrect Answer
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    Explanation:

    Amount of gold in 1st alloy = 0.6 × 12 = 7.2 kg.

    Amount of gold in 2nd alloy = 0.35 × 8 =2.8 kg.
    Required % age of gold = (7.2 + 2.8) / (12 + 8) × 100

    = (10 / 20) × 100 = 50 %.

    Hence, option 1 is the correct answer.

    By: Amit Kumar
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