Amie F. answered • 09/21/15

Tutor

New to Wyzant
Amie-Master's in Middle Grades Math & Algebra 1

Let x be the extra width and length of the walk. (Drawing a picture may help.) You should create four small squares in the corner and two long/two short. Calculating the area of each square/rectangle, you should get x

^{2}, 60x, x^{2}, 30x, x^{2}, 60x, x^{2}, and 30x.Combine like terms to get: 4x

^{2 }+ 180x = 279 or 4x^{2 }+ 180x - 279 =0Use your quadratic formula to find the positive answer (a negative width wouldn't work). Hint:it's a friendly decimal between 1 & 2.

This is the extra width of the walk!