2 men and 3 women finish 25 % of the work in 8 days . 6 men and 12 boys finish the 20% of the work in 4 days .In how many days can 8 men and 3 women and 12 boys finish 40% of the work together.(in approx.) 2 आदमी 3 महिलाएं 25 % कार्य 8 दिनों में पूरा करती हैं | 6 आदमी और 12 लड़के 20 % कार्य 4 दिन में पूरा करते है | 8 आदमी और 3 महिलाएं और 12 लड़के 40% कार्य को कितने दिन में कर सकता है |(लगभग में )

Let m, w, b be work per day by man, woman, boy. From (1): 2m + 3w = 0.25W/8 = W/32. From (2): 6m + 12b = 0.2W/4 = W/20. From (1) and (2), if m = w, then 5m = W/32, so m = W/160. Then 6(W/160) + 12b = W/20, giving b = W/120. For 40% work: (8m + 3w + 12b) × days = 0.4W. Substituting: (11m + 12b) = 11(W/160) + 12(W/120) = 11W/160 + W/10 = 27W/160. Days = 0.4W / (27W/160) = 64/27 ≈ 2.37 days. But answer is 5, suggesting different work rate assumptions.