PRC-2 · Chapter 8 · Question 47 of 60
A retail branch with 40 staff members pays an average salary of Rs. 45,000. Another branch with 60 staff members pays an average salary of Rs. 55,000. What is the combined mean salary of both branches?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: B) Rs. 51,000
Explanation
The combined mean is (n1x̄1 + n2x̄2) / (n1 + n2). Here: (40 * 45,000) + (60 * 55,000) = 1,800,000 + 3,300,000 = 5,100,000. Dividing by the total 100 staff members yields Rs. 51,000.
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