• # question_answer Average salary of all the 50 employees including 5 officers of a company is Rs 850. If the average salary of the officers is Rs 2500, find the average salary of the remaining staff of the company. A)  Rs 665  B)         Rs 667  C)         Rs 669  D)         Rs 700

Here, ${{n}_{1}}=50,$ ${{n}_{2}}=5,$ $x=850$ and $y=2500$ $\therefore$ Average salary of the remaining staff $=\frac{{{n}_{1}}x-{{n}_{2}}y}{{{n}_{1}}-{{n}_{2}}}=\frac{50\times 850-5\times 2500}{50-5}$ $=\frac{42500-12500}{45}=\frac{3000}{45}=\text{Rs}\,\,667$ (approx)