George can do a piece of work in 8 hours. Paul can do the same work in 10…

George can do a piece of work in 8 hours. Paul can do the same work in 10 hours, Harry can do the same work in 12 hours. George, Paul and harry start the same work at 9 am, while George stops at 11 am, the remaining two complete the work. At what time will the work complete?