2017 · Q92
A small company pays each of its 5 category ‘C’ workers ₹ 20,000, each of its 3 category ‘B’ workers ₹ 25,000 and a category ‘A’ worker ₹ 65,000. The number of workers earning less than the mean salary is
Elementary MathematicsStatistics
- A8
- B5
- C4
- D3
Explanation
Mean = (5×20000+3×25000+65000)/9 = 240000/9 ≈ ₹26,667. The 5 category-C (₹20,000) and 3 category-B (₹25,000) workers all earn less than the mean — 8 workers. Hence option (A) 8.