Question

The average salary of all the employees in an office is Rs. 8000. The average salary of 7 team leads is Rs.12000 and the average salary of the rest is Rs. 6000. How many employees are in the office?

• A. 20
• B. 21
• C. 22
• D. 24
• E. 23

Answer 1

The correct option is B

21

Let the number of employees = x

Given that average salary of all the employees = Rs.8000

then total salary of all employees = 8000x

Given that average salary of 7 team leads is Rs.12000

$\Rightarrow$ Total salary of 7 team leads =7$\times$12000=84000

Number of the rest of the employees = (x - 7)

Average salary of the rest of the employees = Rs.6000

Total salary of the rest of the employees = (x - 7)(6000) 8000x = 84000 + (x - 7)(6000)

$\Rightarrow$8x = 84 + (x - 7)(6)

$\Rightarrow$ 8x = 84 + 6x - 42

$\Rightarrow$ 2x = 42

$\Rightarrow$x=42/2=21.