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The average salary of all workers in a workshop is Rs.12000. The average salary of 7 technicians is Rs.15000 and the average salary of the rest is Rs. 9000. The total number of workers in the workshop is :
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- 12
- 13
- 14
- 15
- 12
Correct Option: C
Let Total number of workers in the factory = n
Number of technicians = 7
Remaining workers = n – 7
According to the question,
| = 12000 | |
| n |
⇒ 7 × 15 + 9n – 63 = 12n
⇒ 105 – 63 = 12n – 9n
⇒ 3n = 42
| ⇒ n = | |
| 3 |
∴ Total number of workers in the factory ( n ) = 14
