Answer: 4%
Step by Step Explanation
First you are going to divide 700 by 7 to get 100.
100 Will be the Percentage in this situation to make it easier.
You will then divide 672 by 7 as well to make it fair.
The answer to 672 divided by 7 equals 96
So now you have 96/100%
But you want how much he sold, not how much he had left.
So you want to subtract 96 from 100 to get 4.
4% is the amount that Tim sold that summer.