### The mean monthly salary paid to 75 workers in a factory is Rs. 5680. The mean salary of 25 of them is Rs. 5400 and that of 30 others is Rs. 5700. The mean salary of the remaining workers is.

**A.** Rs. 5000

**B.** Rs. 6000

**C.** Rs. 7000

**D.** Rs. 8000

## Show Answer

###
Answer-B

Solution-

__Solution(By Apex Team)__

Required average
$\begin{array}{l}
=\text { Rs. }\left[\Large\frac{(5680 \times 75)-\{(5400 \times 25)+(5700 \times 30)\}}{75-(25+30)}\right] \\
=\text { Rs. }\left[\Large\frac{426000-(135000+171000)}{20}\right] \\
=\text { Rs. }\left(\Large\frac{120000}{20}\right) \\
=\text { Rs. } 6000
\end{array}$