# What are the variables and equation if Peter’s Lawn Mowing Service charges $10 per job and $0.20 per square yard and he earns $25 for a job?

##### 1 Answer

Jan 2, 2015

Where

From this we can easily derive the size of the lawn:

Step 1:

Step 2: divide both sides by

**Conclusion:**

The lawn is **75 square yards** .

(don't forget the last part, or you'll get remarks like "75 what?")