Jiaqi , Gwen and Patricia painted the walls of a room together. Jiaqi painted 4/7 of the walls. Gwen and patricia painted an equal amount of the remaining area of the walls. Jiaqi painted 2/5 metre square more than the area that gwen and patricia eaxh painted. Find the total.area of the walls that they painted. Give your answer as a mixed number in its simplest form .