Multiple Choice Questions on The average salary of all the workers in factory is 7000 The average salary of 9 mechanic is 5000 an........... for Bihar civil service (BPSC) Preparation

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Multiple Choice Questions

The average salary of all the workers in factory is 7000 The average salary of 9 mechanic is 5000 an...........

Quantitative Aptitude (CSC) Average
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    The average salary of all the workers in factory is 7000. The average salary of 9 mechanic is 5000 and for the rest of the workers it 4000. Find the total number of workers in the factory.

    10

    Incorrect Answer

    11

    Incorrect Answer

    12

    Correct Answer

    13

    Incorrect Answer
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    Explanation:

    Total workers T, so 7000*T = 9*5000 + (T-9)*4000.
    T = 3 so 3+9 =12

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