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  • Question
  • The average salary of the entire staff in an office is ? 200 per day. The average salary of officers is ? 550 and that of non officers is ? 120. If the number of officers is 16, then find the number of non officers in the office.


  • Options
  • A. 72
  • B. 60
  • C. 70
  • D. 65

  • Correct Answer
  • 70 

    Explanation

    Let the number of non-officers be y.

    Then number of entire staff = 16 + y

    Sum of total salary = 200(16 + y)
    =16 x 550 + 120y
    ? 120y + 550 x 16 = 200x16 + 200y
    ? 3y +220 = 80 + 5y
    ? 2y = 140
    ? y = 140/2 = 70


  • More questions

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      The median for the data 2, 4, 6, 8, 10, 12, 14 is

    • Options
    • A. 6
    • B. 8
    • C. 9.5
    • D. 10
    • Discuss
    • 2. 
      The value of 47 / 10000 is?

    • Options
    • A. .0047
    • B. .0470
    • C. .00047
    • D. .000047
    • Discuss
    • 3. If 4x = 18y, then the value of ( x/y - 1) is

    • Options
    • A. 1 3
    • B. 7 2
    • C. 2 3
    • D. 3 2
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    • 4. 
      If the price of 23 toys is Rs. 276, then what will the price (Rs.) of 12 toys?

    • Options
    • A. 144
    • B. 158
    • C. 159
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    • 5. 
      .02 =(......?.....)%

    • Options
    • A. 20
    • B. 2
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    • 6. 
      If 36 men can do a piece of work in 25 hours, in how many hours will 15 men do it?

    • Options
    • A. 45
    • B. 55
    • C. 60
    • D. 72
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    • 7. 
      2?63 / 11 =233

    • Options
    • A. 4
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    • D. 5
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    • 8. 
      When 121012 is divided by 12, the remainder is

    • Options
    • A. 0
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    • 9. 
      Aarti can do a piece of work in 6 days. In how many days will she complete three time of work of same type?

    • Options
    • A. 18 days
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    • 10. 
      750.0003 ÷ 19.999 =?

    • Options
    • A. 49
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