A can complete a work in 18 days and B can complete the same work in 23 days. If they work together, in how many days will the work be completed? MCQ with Answer and Explanation

Explanation:
Combined rate = 1/22 + 1/33. Time = 13.2 days.

Explanation:
Total work = 13 × 29 = 377 man-days. Required days = 377/17 = 22.18 days.

Explanation:
Total work = LCM of 12, 15, and 20 = 60 units. Efficiency of A = 5, B = 4, C = 3. Total efficiency = 5 + 4 + 3 = 12 units/day. Days required = 60 / 12 = 5 days.