# Ch 23: High School Algebra Homework Help: Percent, Proportions & Ratios

### About This Chapter

## How it works:

- Identify which concepts are covered on your calculations, ratios, percent and proportions homework.
- Find videos on those topics within this chapter.
- Watch fun videos, pausing and reviewing as needed.
- Complete sample problems and get instant feedback.
- Finish your calculations, ratios, percent and proportions homework with ease!

## Topics from your homework you'll be able to complete:

- Ratios and rates
- Proportion
- Percents in word problems
- Compounding interest formulas
- Taxes and discounts
- Math combinations
- Permutations
- Solutions for problems with time
- Distance formulas

### 1. Ratios & Rates: Definitions & Examples

In mathematics, a ratio indicates the number of times that a smaller number is contained within a larger number, while a rate expresses a ratio for two quantities measured in different units. Explore the definitions and examples of ratios and rates, learn how to compare them, and solve practice problems.

### 2. How to Solve Problems with Money

Some mathematical word problems focus on money, using real-world situations to calculate how much money is on hand and how much is needed to make purchases. Learn how to solve problems with money, and see several sample problems.

### 3. Proportion: Definition, Application & Examples

A problem with a proportion, which is a set of ratios that equal each other, can be solved with cross-multiplication. Learn about proportions, see sample problems, and learn how to calculate percent problems.

### 4. Calculations with Ratios and Proportions

Ratios allow us a way to mathematically compare two or more items, and proportions can help us find out even more information. Learn the definition of ratios and proportions, and understand how to calculate ratio and proportion problems.

### 5. Percents: Definition, Application & Examples

Percent means per hundred and is expressed with the symbol %. Explore the definition, application, and example practice problems of percents and learn how to use percents with fractions and decimals.

### 6. How to Solve Word Problems That Use Percents

To solve percent word problems, one follows four steps. Learn different ways of finding the percent, about finding the whole and the part, and percent change.

### 7. How to Solve Interest Problems: Steps & Examples

If a person is trying to learn how to better save money, it's important that they learn about interest. This lesson explores how to calculate interest, how to find the interest, how time plays a part in dealing with interest, and how to find the interest rate.

### 8. Compounding Interest Formulas: Calculations & Examples

Compound interest refers to interest calculated on both the principal amount of a loan or investment as well as on the accumulated interest. Learn about compounding interest formulas, review the calculations, and work examples. Understand the difference between simple and compound interest, and recognize the importance of the order of operations in calculating compound interest.

### 9. Taxes & Discounts: Calculations & Examples

Shopping taxes and discounts are two calculations consumers need to understand. Learn the connection between math and shopping, examine examples and calculations for taxes and discounts, and review examples of tax as well as tax and discount calculations.

### 10. Math Combinations: Formula and Example Problems

Factorials are used to compute for a combination. Learn more about these concepts, solve the example problems in this video using the combination discussed herein, and learn an easy technique for combination problems.

### 11. How to Calculate a Permutation

A permutation is a process for placing things into a linear order. Learn how to calculate a permutation. Explore factorials and permutation notations, and review examples of permutation calculations.

### 12. How to Solve Problems with Time

Teamwork can help save time on complex tasks. Explore the work-rate formula, and learn how to solve for the time it takes for one individual and multiple individuals to complete a task, in order to compare the results.

### 13. Distance Formulas: Calculations & Examples

Distance formulas are used to compute the distance between two points. Learn how to solve for distance, rate, and time using the given examples, and explore calculations of distance from 'distance plus distance' problems and 'distance and fuel' problems.

### 14. What is a Scale Factor? - Definition, Formula & Examples

A scale factor is the ratio of the corresponding sides of two similar objects. Study the definition of the scale factor and its importance, understand the use of the scale factor formula by viewing examples, and learn about blueprint reading, and model figures.

### 15. Common Tangent: Definition & Construction

A common tangent is a line that is perpendicular to more than one circle. Explore the definition and construction of common tangents. Learn about infinite common tangents, as well as internal and external common tangents.

### 16. Distance in Math: Formula & Concept

Distance is a numerical description of how far apart two objects are. This lesson describes the mathematical formula for determining distance and gives some examples.

### 17. Equivalence Relation: Definition & Examples

An equivalence relation is a type of comparison between elements that are reflexive, symmetric, and transitive. Explore the ways that these conditions are evaluated through examples of equivalence between different types of berries, words with the same three letters, and natural numbers.

### 18. Equivalent Ratios: Definition & Examples

Equivalent ratios, like equivalent fractions, are numbers with the same value. Explore the definitions of equivalent ratios and equivalent fractions with examples of each.

### 19. Equivalent Sets: Definition & Example

A set is a group of elements in brackets that are related to one another. Learn about the differences and similarities between an equal set and an equivalent set, describe the notion of equivalent sets, and how to define cardinality.

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### Other Chapters

Other chapters within the High School Algebra I: Homework Help Resource course

- High School Algebra - Basic Arithmetic: Homework Help
- High School Algebra - Solving Math Word Problems: Homework Help
- High School Algebra - Decimals and Fractions: Homework Help
- High School Algebra - Percent Notation: Homework Help
- High School Algebra - Real Numbers: Homework Help
- High School Algebra Homework Help: Exponents & Exponential Expressions
- High School Algebra - Radical Expressions: Homework Help
- High School Algebra Homework Help: Algebraic Expressions & Equations
- High School Algebra - Properties of Functions: Homework Help
- High School Algebra - Matrices and Absolute Value: Homework Help
- High School Algebra - Working With Inequalities: Homework Help
- High School Algebra - Properties of Exponents: Homework Help
- High School Algebra - Complex and Imaginary Numbers: Homework Help
- High School Algebra - Algebraic Distribution: Homework Help
- High School Algebra - Linear Equations: Homework Help
- High School Algebra - Factoring: Homework Help
- High School Algebra Homework Help: Graph & Factor Quadratic Equations
- High School Algebra Homework Help: Polynomial Functions & Their Properties
- High School Algebra - Rational Expressions: Homework Help
- High School Algebra - Cubic Equations: Homework Help
- High School Algebra - Quadratic Equations: Homework Help
- High School Algebra - Measurement and Geometry: Homework Help
- High School Algebra Homework Help: Probability, Data & Statistics
- High School Algebra - Well-Known Equations: Homework Help