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23 July, 04:10

A factory buys 10% of its components from suppliers B and the rest from supplier C. It is known that 6% of the components it buys are faulty. of the components brought from suppliers A, 9% are faulty and of the components bought from suppliers B, 3% are faulty. find the percentage of components bought from supplier C that are faulty.

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  1. 23 July, 07:11
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    The percentage of the components bought from supplier C that are faulty = 88%

    Complete Question:

    A factory buys 10% of its components from supplier A, 30% from supplier B, and the rest from supplier C. it is known that 6% of the components it buys are faulty. of the components bought from supplier A, 9% are faulty and of the components bought from supplier B, 3% are faulty.

    find the percentage of the components bought from supplier C that are faulty?

    Step-by-step explanation:

    Let x be the total components bought by the factory

    Components supplied by A = 10% of x

    Components supplied by B = 30% of x

    The rest supplied by C:

    Percentage supplied by C = 100 - (30+10) = 100-40 = 60%

    Components supplied by C = 60% of x

    % of all faulty components = 6%

    Amount of faulty component = 6% of x

    faulty components from A = 9%

    Amount of faulty component from A = 9% * (6% of x) = 0.0054x

    faulty components from B = 3%

    Amount of faulty component from A = 3% * (6% of x) = 0.0018x

    Amount of faulty component from C = (6% of x) - (0.0054x+0.0018x)

    = 0.06x - 0.0072x

    = 0.0528x

    Let the percentage of the components bought from supplier C that are faulty = y%

    y% * 6% of x = 0.0528x

    y% * 0.06x = 0.0528x

    y% = 0.0528x/0.06x

    y% = 0.88 = 88%

    The percentage of the components bought from supplier C that are faulty = 88%
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