Arectangular swimming pool that is 10 ft wide by 16 ft long is surrounded by a cement sidewalk of uniform width. if the area of the sidewalk is 155 ft2, what is its width? a = lw 2.5 ft 5.0 ft 6.2 ft 15.5 ft

The pool has area .

Let be the width of the sidewalk. Then the combined area of the pool and sidewalk is , so that the area of the sidewalk alone is .

We're told this area is , so

36/60

36/2=18

60/2=30

18/30

18/3=6

30/3=10

6/10

6/2=3

10/2=5

your final answer would be 3/5 of an

hope this !