Praxis Math : Ratios and Proportional Relationships

Study concepts, example questions & explanations for Praxis Math

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Example Questions

Example Question #1 :Number And Quantity

isof which of the following numbers?

Possible Answers:

Correct answer:

Explanation:

我n 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 thatisof 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.

Example Question #1 :Praxis Core Skills: Math

isof which of the following numbers?

Possible Answers:

Correct answer:

Explanation:

我n 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 thatisof 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.

Example Question #1 :Understand Ratio Concepts And Use Ratio Reasoning To Solve Problems

Calculateof.

Possible Answers:

Correct answer:

Explanation:

我n 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 ore whole number isand we need to calculateof this number. We will name this variable,. 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.

Example Question #4 :Understand Ratio Concepts And Use Ratio Reasoning To Solve Problems

Calculateof.

Possible Answers:

Correct answer:

Explanation:

我n 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 ore whole number isand we need to calculateof this number. We will name this variable,. 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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