On average 1 hour Hanh can clean the house is:

                   1:2=1/2(work)

On average 1 hour Phuong can clean the house is:

                    1:3=1/3(work)

If the two of you clean the house together the average cleaning will be:

                    1/2+1/3=5/6(work)

The amount of time two people clean the house together is:

                    1:5/6=6/5(hours)

              Answer:6/5 hours

#Hoidap247         @duyenhamai8067

The number of cleaning the house Hanh can do every hour:

                     1:2=1/2(work)

The number of cleaning the house Phuong can do every hour:

                       1:3=1/3(work)

The number of cleaning the house if Hanh and Phuong can do together every house:

                       1/2+1/3=5/6(work)

The time they need to clean house is:

               1:5/6=6/5(hours)

Answer:6/5 hours

#Hoidap247           @xuantung9athcslaicach