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Question

The average salary of all the workers in a workshop is Rs. 9000. The average salary of 9 technicians is Rs.12000 and the average salary of the rest is Rs.4500. The total number of workers in the workshop is


  1. 10

  2. 11

  3. 12

  4. 13

  5. 15


Solution

The correct option is E

15


Let the total number of workers be x.

Then, 9000x = (12000×9) + 4500(x – 9)

4500x = 67500

x = 15

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