The average monthly salary of all employees of a firm is ₹60,000. The 12 officers earn an average of ₹1,20,000 and the rest earn an average of ₹50,000. How many employees does the firm have?
Competition practiceStatistics
A72
B96
C80
D84
Step-by-Step Solution
12(120000)+(N−12)(50000)=60000N gives 1440000−600000=10000N, so N=84.
Answer: D) 84
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