Solve the problem. See Examples 8 and 9.Distance between streets. Harold Johnson lives on...

Solve the problem. See Examples 8 and 9.

Distance between streets. Harold Johnson lives on a four-sided, 50,000-square-foot lot that is bounded on two sides by parallel streets. The city has assessed him $1000 for curb repair, $2 for each foot of property bordering on these two streets. How far apart are the streets?

Figure for Exercise 87