Average Practice Test 2

Question : 27 of 40

Marks: +1, -0

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:

Validate

Solution:

Let the total number of workers be x, then,

{7× 12000 +(x-7)× 6000}/x=8000

⇒ 84000 + 6000x - 42000 = 8000x

⇒2000x = 42000

⇒ x = 21

Hence, total number of workers = 21

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