A contractor employs 20 men, 15 women and 5 children, paying Rs. 10, Rs. 8 and Rs. 3 per day respectively. What is the weighted mean daily wage?
Correct answer B. 8.37
Explanation
Weighted mean = (20×10 + 15×8 + 5×3) ÷ (20 + 15 + 5) = (200 + 120 + 15) ÷ 40 = 335 ÷ 40 = 8.375, about Rs. 8.37.
Answer checked How we write and check questions
Discussion