A can finish a work in 12 days and B can do it in 18 days. How long will it take for them to complete the work together if A works for 4 days and B works for 6 days?

A can complete a work in 20 days and B in 30 days. If they work together, how long will it take them to complete the work?

A and B can complete a job in 30 days and 45 days respectively. If they work together, how long will it take to complete the job?

If A can complete a job in 8 days and B in 12 days, how long will it take for A and B to finish the job if A works alone for 3 days and then B joins him?

If A can complete a job in 18 days and B in 24 days, how long will it take for them to complete the job if they work together?

A can do a job in 9 days, B in 12 days, and C in 18 days. How many days will it take for all three working together to complete the job?

A and B can finish a job in 16 days and 24 days respectively. If they start the work together and A leaves after 8 days, how many days will B take to complete the remaining work?

If A can complete a task in 10 days and B can do it in 15 days, how many days will it take for both A and B to complete the task if they work together?

If A and B together can complete a work in 10 days, and B alone can complete it in 15 days, how many days will A alone take to complete the work?

A and B can complete a work in 40 days and 60 days respectively. If they work together for 12 days, how much of the work is completed?