Ratios and Proportional Relationships - Praxis Math

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Question

is of which of the following numbers?

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Answer

In order to solve this problem, we need to understand the relationship between percentages and ratios. Percents can be written as a value over a whole. In this case , our whole is one-hundred percent; therefore, we can write the following:

Now, we need to create a relationship between our known value and the number we need to calculate. In the problem, we know that is of another number we will name, . Using this information we need to construct a proportion. We can write the following proportion:

We can cross multiply and solve for the unknown variable.

Rewrite.

Simplify.

Divide both sides of the equation by .

Solve.

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