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6.14: Bargain Shopping

Difficulty Level: At Grade Created by: CK-12

Teacher Notes

In Bargain Shopping signs show prices for the same item at two different stores. At one store, the price is a multiple of the number of units, so the unit price can be easily determined by dividing. At the other store, the price is not a multiple of the number of units. To determine the better buy, students have to equate the number of items from both stores and compare prices.

Solutions

Bargain Shopping - Reason Proportionally

Which store has the better buy for 3 boxes of pastels?

Use the facts on the signs. Figure out the better buy.

Which store has the better buy for 3 brushes? How did you decide?

Which store has the better buy for 6 jars of oil paints? How did you decide?

Which store has the better buy for 4 palettes? How did you decide?

Which store has the better buy for 7 palette knives? How did you decide?

Which store has the better buy for 4 pads of drawing paper? How did you decide?

Which store has the better buy for 2 canvases? How did you decide?

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CK.MAT.ENG.SE.1.Algebra-Explorations-K-7.6.14

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