Realtors selling homes receive a commission of 7% for the first $140,000 of the selling price, and 3% for any amount exceeding $140,000. A Realtor at the firm received $12,530 for selling a house. What was it's selling price?

Solution:

The selling price is x

So

7%*140000+3%(x-140000)=12530

x=231,000

So the selling price is $231,000