The average salary of all the workers in a workshop is Rs.8,000. The average salary of 7 technicians is Rs.12,000 and the average salary of the rest is Rs.6,000. The total number of workers in the workshop is
Options:
A . 23
B . 22
C . 21
D . 20
Answer: Option C Answer: (c)Total workers = x (let) ∴ 7 × 12000 + (x – 7) × 6000 = 8000 x ⇒ 84000 + 6000 x – 42000 = 8000 x ⇒ 8000 x – 6000 x = 42000 ⇒ 2000 x = 42000 ⇒ x = $42000/2000$ = 21
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