Multiple Choice Questions on 400 gm of salt solution has 50 salt in it How much salt should be added to make it 70 in the solutio........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

400 gm of salt solution has 50 salt in it How much salt should be added to make it 70 in the solutio...........

Quantitative Aptitude (CDS) Mixture and Alligation
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    400 gm of salt solution has 50% salt in it. How much salt should be added to make it 70% in the solution?

    266.67 gm

    Correct Answer

    266 gm

    Incorrect Answer

    266.76 gm

    Incorrect Answer

    269 gm

    Incorrect Answer
    Explanation:

    The existing solution has 50% salt. And salt is to be mixed; so the other solution has 100% salt. So,
    by allegation method:
    The two mixtures should be added in the ratio
    = 100-70/70-50
    = 30/20 = 3/2
    Therefore, required salt = 400×2/3
    = 266.67 gm

    By: bhavesh kumar singh
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