Chapter 9 - Basic Algebra - 9.8 Using Equations to Solve Application Problems - 9.8 Exercises - Page 689: 52

The length of the city park is $90$ yd and the width is $30$ yd.

Let $x =$ the width of the city park $2(3x) + 2(x) = 240$ $6x + 2x = 240$ $8x = 240$ $x = \frac{240}{8}$ $x = 30$ yd Let $y = $ the length of the city park $y = 3x$ $y = 3(30)$ $y = 90$ yd