Correct option is A
Given:
10 men can finish work in 8 days
15 women can finish work in 8 days
Required time = 12 days
Formula Used:
Work = Number of persons × Days
Solution:
Let one man's one-day work = m
Then one woman's one-day work = m
Total work = 10 × 8 = 80m
For 12 days:
12(xm + y × m) = 80m
Dividing both sides by 4m:
3x + 2y = 20