math
posted by Lee .
A rectangular park measuring 35 yards by 24 yards is surrounded by a trail of uniform width. If the area of the park and the trail combined is 2420 square yards, what is the width of the path?

outside dimension
length = 35+2x
width = 24+2x
solve
(35+2x)(24+2x) = 2420
You will have to know how to solve a quadratic equation