IXL | Ratios and rates: word problems

Ariana picked 21 cups of ripe strawberries from her garden. She plans to use all of the strawberries to make strawberry jam. Her recipe calls for 2 cups of sugar for every 7 cups of strawberries.

How much sugar does Ariana need to use?

cups

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Learn with an example

question

Hannah works at Blooming Bouquets flower shop. She uses 2 roses for every 5 carnations in the Spring Medley bouquets. Today she will make a Spring Medley bouquet with 16 roses.

How many carnations should Hannah use in the bouquet?

carnations

solution

Hannah uses 2 roses for every 5 carnations in the bouquet. She will make a bouquet with 16 roses, and you need to find how many carnations she should use. Write a proportion.

2 roses

5 carnations

16 roses

? carnations

Compare the numerators.

roses

5 carnations

roses

? carnations

To get from 2 to

16,

multiply by

Multiply the numerator and denominator by 8 to find how many carnations Hannah should use.

2 roses

5 carnations

16 roses

carnations

Hannah should use 40 carnations.

Looking for more? Try these:

Lesson: Proportions

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Teacher tools

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S.11Unit rates

S.8Write an equivalent ratio

Lesson: Proportions

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