If 6 men can complete a work in 4 days and 3 women can complete the same work in 7 days, then find the time taken to complete same work by 8 men and 3 women.
Show answer & explanation
Correct answer: B
Explanation
The Correct answer is option 2 i.e. .
6 men can complete a work in 4 days and 3 women can complete the same work in 7 days
6 men × 4 = 3 women × 7
8 men = 7 women
Thus, the efficiency of men = 7 and,
The efficiency of women = 8
Total work = (6 × 7 × 4) = 168
8 men and 3 women = (8 × 7 + 3 × 8) = 56 + 24 = 80
Time = 168/80 = 21/10