A) 12%
B) 15%
C) 18%
D) 20%
Correct Answer: A
Solution :
| [a] Let total employee of a factory = x and number of officers = 150 Then, number of other employees \[=(x-150)\] Now, total salary of officers \[=150\times 15000\] and total salary of other employees \[=(x-150)\times 8000\] Now, according to the question, \[150\times 15000+(x-150)\times 8000=x\times 8840\] \[\Rightarrow \] \[15\times 15000+(x-150)\times 800=x\times 884\] \[\Rightarrow \] \[225000+800x-120000\text{ }=884x\] \[\Rightarrow \] \[884x-800x=225000-120000\] \[\Rightarrow \] \[84x=105000\] \[\Rightarrow \] \[x=1250\] Now, required percentage \[=\frac{150}{1250}\times 100=12%\] |
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