A and B can do a job in 6 and 12 days respectively. They start working together but after 2 days, A leaves. How many more days will B take to finish the job?
Q1. A and B can do a job in 6 and 12 days respectively. They start working together but after 2 days, A leaves. How many more days will B take to finish the job?
Answer: 3
Explanation: A's 1 day work = 1/6, B's 1 day work = 1/12. Together, they do 1/6 + 1/12 = 3/12 = 1/4 of the work in 1 day. In 2 days, they do 1/2 the work. So, 1/2 work is left for B to do.