A rectangular park is three blocks longer than it is wide. the area of the park is 40 square blocks. If w represents the widths, write an equation in terms of w for the area of the park. Find the length and width of the park.
let l be the length of the park
let w be the width of the park
Then you know: l = w + 3
and a = l * w
Plug in the term for l :
You know: a = 40
Now you have a quadratic equation to solve:
The negative solution isn't very plausible here. Thus the park is 8 blocks long and 5 blocks wide.