If 17 women and 24 men can do a piece of work in 5 days and 12 women and 23 men can do it in 6 days, then which one of the following is correct?
- A. Efficiency of 13 women = Efficiency of 18 men ✓
- B. Efficiency of 11 women = Efficiency of 16 men
- C. Efficiency of 13 women = Efficiency of 17 men
- D. Efficiency of 11 women = Efficiency of 15 men
Correct Answer: A. Efficiency of 13 women = Efficiency of 18 men
Explanation
Equating total work: 5(17w + 24m) = 6(12w + 23m) \implies 85w + 120m = 72w + 138m. Solving this gives 13w = 18m, meaning the efficiency of 13 women equals that of 18 men.
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