Moving Basket A to the right counterbalances the loss of cherries from Basket B.

The formula for the perimeter of a rectangle is
P = 2/*2w
If the long sides of the rug measure 15 feet each, then both long sides together equal 30 feet. Subtract the length of both long sides from the total perimeter measurement.
45-(2*15) = 45-30=15ft
Now we have the part of the perimeter made up by the short sides, but we need to divide it by two to get the length of each short side.
15 ft. + 2-7.5 ft