The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 14000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is	Pick one:  A) 20  B) 21  C) 22  D) 28  E) NONE
Sol.   Let the total number of workers be x. Then,   8000x = (14000 × 7) + 6000 ( x – 7)   ‹=› 2000x = 56000   ‹=› x = 28.   Answer 28
<result>D</result>
The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 14000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is