**Mixture Problems**

Alphonso Kennedy Lindblom Tech. H. S.

6130 S Wolcott Ave.

Chicago, Ill. 60636

312-471-8700

**Objective**:

Ninth grade students will be able to write the equation and solve mixture

problems.

**Equipment and Materials**:

1. Overhead Projector

2. 100 red and 100 yellow beads for each group of 4 students

3. 1 container for each group

4. 1 calculator for each group

5. 5 small cups for each group

**Recommended Strategies**:

1. Students will count out 4 cups of beads that are 40% red (a cup contains 15

beads) and place the beads in a container.

2. Students will count out 2 cups of beads that are 80% red and add this

mixture to the container until the beads in the container are 50% red.

3. Students will complete the following table.

Original Mixture Add New Mixture

(Percent)(Amount) (Percent)(Amount) (percent)(Amount)

________________ _______________ = _______________

4. Students will solve the next two problems by repeating the steps above.

a. Change 8 cups of beads that are 50% red to 60% red by adding 100% red

beads.

b. Change 4 cups that are 20% red to 15% red by adding yellow beads.

5. Student will solve additional problems by letting x = amount added.

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