In this lesson, we learn how to solve a stamp problem using a chart and variables. The problem involves 3-cent stamps and 29-cent stamps that add up to a dollar 54, and we have to find the number of 29-cent stamps. By using variables for the number of each stamp and their values, and setting up an equation with the total value of the stamps, we can solve for the number of 29-cent stamps. The answer is 5, and we verify that it adds up correctly to the total value of the stamps.
Shows how to solve a word problem having to do with different stamps and their values. This is solved with one variable, but more than one stamp is defined. It is done with a chart.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com