In this lesson, we learn how to solve a percent mixture problem using one variable. The problem asks us to find the percent concentration of pure apple juice in a mixture of ten quarts of pure apple juice added to 90 quarts of a fruit juice that is only 10% pure apple juice. Using a picture and some algebra, we learn that the resulting mixture has a percent concentration of 19%.
Explains using picture how to solve this percent mixture problem using one variable: Ten quarts of pure apple juice are added to 90 quarts of a fruit juice that 10% pure apple juice. What is the percent concentration of pure apple juice in the resulting mixture?
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com