A team of 14 men can complete a piece of work in 33 days. After they have worked together for 11 days, 8 additional men join the team. How many days will it take to complete the remaining work?

If P and Q together can complete a piece of work in 15 days and P alone can do it in 45 days, in how many days can Q alone complete that work?

A can lay a railway track between two stations in 16 days and B can do the same job in 12 days. With the help of C, they finished the job in 4 days. In how many days can C alone do the job?