IXL | Find an equivalent ratio: word problems

Nolan is following his family's macaroni and cheese recipe. The recipe calls for 6 cups of shredded cheese and 4 tablespoons of milk. He wants to make a smaller batch, so he uses only 3 cups of shredded cheese.

How much milk does Nolan need for this smaller batch?

tablespoons

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Learn with an example

question

Eliana owns the Blossom garden shop. To keep her plants healthy, she always adds 3 cups of fertilizer for every 8 cups of soil. She filled a large pot with 24 cups of soil for a ficus plant.

How many cups of fertilizer should Eliana add to the pot?

cups

solution

Eliana always adds 3 cups of fertilizer for every 8 cups of soil. You need to find how many cups of fertilizer Eliana should add to the pot. Write a proportion.

3 cups of fertilizer

8 cups of soil

? cups of fertilizer

24 cups of soil

Compare the denominators.

3 cups of fertilizer

cups of soil

? cups of fertilizer

cups of soil

To get from 8 to

24,

multiply by

Multiply the numerator and denominator by 3 to find how many cups of fertilizer Eliana should add to the pot.

3 cups of fertilizer

8 cups of soil

cups of fertilizer

24 cups of soil

Eliana should add 9 cups of fertilizer to the pot.

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Lesson: Ratios

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Write an equivalent ratio

Lesson: Ratios

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