The perimeter of a rectangular garden is 43.8 feet. It's length is 12.4 feet. What is its width?

If it's a rectangle, the parallel sides must be congruent. Therefore, you have 2 lengths of 12.4 feet, which leads to a total of 24.8 feet. You're given that the garden is 43.8 feet in perimeter.

43.8-24.8=15. This is the combined length of the two remaining sides. Since these must also be congruent, divide by 2.

15/2=7.5, which is your final answer.

9.5

If you add 12.4 plus 12.4 you get 24.8 then you do 43.8 minus 24.8 and you get 19 and 19 divided by 2 is 9.5

9.5+9.5+12.4+12.4=43.8