In this lesson, students learn how to solve percent mixture problems using one variable. Using a dog food example, the teacher explains how to mix a certain amount of 50% rice dog food with 400 pounds of 80% rice dog food to make a 75% rice dog food. By setting up an equation to find how much of the 50% dog food to use, students learn how to solve for the unknown variable and check their work to make sure the amount of rice in the final mixture is correct.
Explains using picture how to solve this percent mixture problem using one variable: How many pounds of dogfood that is 50% rice must be mixed with 400 pounds of dogfood that is 80% rice to make a dogfood that is 75% rice?
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