Lisa M. answered • 08/24/15

Tutor

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College Teacher:MS Office, IT, Web Design, General Computer/Software

72 is three times 24, the amount in the recipe.

So multiply the recipe items each by 3

3 1/3 x 3 = amount of flour

2 2/3 x 3 = amount of sugar

Eighth-graders should know how to multiply fractions, so have your student do this math and he or she will get the correct 2 answers.

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HINT:

Multiply fractions, multiply the fraction denominator (is the bottom number) by the whole number, and then add it to the fraction's numerator (is the top number).

The x 3 , the 3 is expressed 3/1

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10/3 x 3 = (10 x 3) divided by 3 = 10

or 10/3 x 3/1 = 30 divided by 3 = 10 cups of flour

8/3 x 3 = (8 x 3) divided by 3 = 8

or 8/3 x 3/1 = 24 divided by 3 = 8 cups of sugar