A can complete a work in 22 days and B can complete the same work in 22 days. If they work together, in how many days will the work be completed? MCQ with Answer and Explanation

Explanation:
The number of workers (3 men and 4 boys) is exactly half of the original group (6 men and 8 boys). Since efficiency becomes half, the time taken will double. Total time = 10 * 2 = 20 days.

Explanation:
Total work = LCM(18, 24, 36) = 72 units. Efficiency of A = 4, B = 3, C = 2. Combined efficiency = 4 + 3 + 2 = 9 units/day. Time taken together = 72 / 9 = 8 days.

Explanation:
Total work = 11 × 15 = 165 man-days. Required days = 165/15 = 11.0 days.