Multiple Choice Questions on The average monthly salary of 10 workers of a company is Rs 1445 One more member whose monthly salar........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The average monthly salary of 10 workers of a company is Rs 1445 One more member whose monthly salar...........

Quantitative Aptitude ( CCS) Average
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    The average monthly salary of 10 workers of a company is Rs. 1445. One more member whose monthly salary is Rs. 1500 has joined the group. The average monthly salary of 11 workers is

    Rs. 1500

    Incorrect Answer

    Rs. 1450

    Correct Answer

    Rs. 1475

    Incorrect Answer

    Rs. 1400

    Incorrect Answer
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    Explanation:
    Mean = sum of all observations/ number of observation
    Mean monthly salary of 10 members = Rs 1445
    So, total salary of 10 members = Rs 1445 x 10 = Rs 14450
    Now, one more member whose monthly salary is Rs1500 has joined the group.
    So, total salary of 11 members = Rs 14450 + Rs 1500 = Rs 15950
    Thus, mean monthly salary of 11 members = Rs 15950/11 = Rs 1450
    Hence, option 2 is the correct answer.

    By: Amit Kumar
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