A) 20
B) 21
C) 22
D) 23
Correct Answer: B
Solution :
[b] Let total number of workers be n Total salary of all workers = 8000 n Total salary of 7 technicians \[=7\times 12000=84,000\] Total salary of remaining workers \[=7(n-\,7)\times 6000\] \[84000+(n-\,7)\times 6000=8000\,n\] \[84+6n-\,42=8n\] \[n=21\]
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