A can complete a work in 16 days and B can complete the same work in 31 days. If they work together, in how many days will the work be completed? MCQ with Answer and Explanation
A and B can do a job in 6 days and 12 days respectively. They began the work together but A left after 3 days. In how many days was the remaining work completed by B?
Explanation:
Total work = LCM(6, 12) = 12 units. Efficiency of A = 2, B = 1. Combined efficiency = 3 units/day. In 3 days, work done = 3 * 3 = 9 units. Remaining work = 12 - 9 = 3 units. Time taken by B to complete remaining work = 3 / 1 = 3 days.
No comments yet. Be the first to start the discussion!