Question

In an office $20$ clerks get a salary of Rs. $2500$ each and $10$ officers get a salary of Rs. $4000$ each. The average salary of the employees in the office is:

• A. Rs.$2800$
• B. Rs.$3000$
• C. Rs.$3200$
• D. Rs.$3600$

Answer 1

The correct option is B Rs.$3000$

We know, average is the sum of the data values divided by the total number of data values.

Given that, one clerk get a salary of $2500$ rupees.

Therefore, $20$ clerks get a salary of $20\times 2500=50000$ rupees.

Also, one officer get a salary of $4000$ rupees.

Therefore, $10$ officers get a salary of $10\times 4000=40000$ rupees.

Therefore, average salary $=\frac{50000+40000}{20+10}=\frac{90000}{30}=3000$ rupees.

Hence, option $B$ is correct.