Average Mcqs

Q.  The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is__________________?

a. 20
b. 21
c. 22
d. 23


ANSWER: See Answer
 
Let the total number of workers be x. Then,

8000x = (12000 * 7) + 6000(x – 7)
= 2000x = 42000
= x = 21
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