A can complete a work in 27 days and B in 44 days. If both work together, in how many days will the work be completed? MCQ with Answer and Explanation

Explanation:
Total work = 11 × 21 = 231 man-days. Required days = 231/15 = 15.4 days.

Explanation:
Combined rate = 1/24 + 1/34. Time = 1 ÷ combined rate = 14.07 days.

Explanation:
Total work = 12 * 12 = 144 man-days. In 6 days, 12 men complete = 12 * 6 = 72 man-days. Remaining work = 144 - 72 = 72 man-days. Remaining men = 12 - 6 = 6 men. Time taken by 6 men to complete remaining work = 72 / 6 = 12 days.