The benefit in the percentage did he make at the time of purchasing and selling the car is 10%.
Since George bought a car at $5000 and sold it at $5500
So, the profit percentage be like
[tex]= (5500 - 5000) \div 5000[/tex]
= 10%
hence, The benefit in the percentage did he make at the time of purchasing and selling the car is 10%.
Learn more about percentage here: https://brainly.com/question/24552083