A can complete a work in 17 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:
Total work = LCM(10, 15, 30) = 30 units. Efficiency of A = 3, B = 2, C = 1. In a 3-day cycle (A on day 1, B on day 2, C on day 3), work completed = 3 + 2 + 1 = 6 units. Number of cycles required = 30 / 6 = 5 cycles. Total days = 5 * 3 = 15 days.

Explanation:
Combined rate = 1/22 + 1/20. Required time = 10.48 days.

Explanation:
Combined rate = 1/11 + 1/26. Time = 1 ÷ combined rate = 7.73 days.