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Arithmetic Aptitude :: Average

  1.  

    In Arun's opinion, his weight is greater than 65 kg but less than 72 kg. His brother doest not agree with Arun and he thinks that Arun's weight is greater than 60 kg but less than 70 kg. His mother's view is that his weight cannot be greater than 68 kg. If all are them are correct in their estimation, what is the average of different probable weights of Arun?

  2. A.

    67 kg.

    B.

    68 kg.

    C.

    69 kg.

    D.

    Data inadequate

    E.

    None of these

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  3.  

    In Arun's opinion, his weight is greater than 65 kg but less than 72 kg. His brother doest not agree with Arun and he thinks that Arun's weight is greater than 60 kg but less than 70 kg. His mother's view is that his weight cannot be greater than 68 kg. If all are them are correct in their estimation, what is the average of different probable weights of Arun?

  4. A.

    67 kg.

    B.

    68 kg.

    C.

    69 kg.

    D.

    Data inadequate

    E.

    None of these

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  5. The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is:

  6. A.

    17 kg

    B.

    20 kg

    C.

    26 kg

    D.

    31 kg

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  7. A library has an average of 510 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is:

  8. A.

    250

    B.

    276

    C.

    280

    D.
    285

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  9. If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is:

  10. A.

    53.33

    B.

    54.68

    C.

    55

    D.

    None of these

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  11. The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class

  12. A.

    47.55 kg

    B.

    48 kg

    C.

    48 .55 kg

    D.

    49.25 kg

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  13. A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half (1/2). The number of pupils in the class is:

  14. A.

    10

    B.

     20

    C.

    40

    D.

    73

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