A does half as much work as B in one-sixth of the time.If together they take 10 days to complete a work,how much time shall B alone take to do it?

A does half as much work as B in three-fourth of the time. If together they take 18 days to complete the work, how much time shall B take to do it?

A does half as much work as B in three-fourth of the time. If together they take 18 days to complete a work, how much time shall B take to do it alone ?