Answer:
the distance between the right edge of the painting and right edge of the wall = 8.8 ft
Explanation:
From the question, the painting is hung in center of a rectangular wall and so the distance between them on either side will be the same.
Thus, we will divide the length of the painting and wall by 2 to get 2.4/2 = 1.2 ft and 20/2 = 10 ft .
So, the distance between the right edge of the painting and right edge of the wall will be;
D = 10 - 1.2 = 8.8 ft