Multiple Choice Questions on The average income of 40 persons is Rs 4200 and that of another 35 persons is Rs 4000 The average in........... for Mathematics - All Exams Preparation

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Indian Economy - Understanding the basics of Indian economic system

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    The average income of 40 persons is Rs. 4200 and that of another 35 persons is Rs. 4000. The average income of the whole group is

    Rs. 4100

    Incorrect Answer

    Rs. 4106

    Incorrect Answer

    Rs.4106 2/3

    Correct Answer

    Rs.4108 1/3

    Incorrect Answer
    Explanation:

    Average income of whole group = \frac{4200\times 40+4000\times 35}{75}

    = \frac{168000+140000}{75} 

    = \frac{308000}{75} = 4106\frac{2}{3}Rs.

    Hence, option 3 is the correct answer.


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