Finding the Total Number of Cell Phones Sold

Oct 13, 2025 by wbrum.org 128 views

Introduction

In this article, we will delve into a mathematical problem involving the sale of cell phones in a store. The store sold iPhones, Samsungs, and Huaweis in a specific ratio, and we are given the number of Huaweis sold. Our goal is to determine the total number of cell phones sold in the store.

The Problem

A cell phone store sold iPhones, Samsungs, and Huaweis in the ratio 2:3:5. If they sold 15 Huaweis, how many cell phones did they sell altogether?

Breaking Down the Ratio

Let's break down the ratio 2:3:5. This means that for every 2 iPhones sold, 3 Samsungs are sold, and 5 Huaweis are sold. We can represent this ratio as a fraction:

2 (iPhones) : 3 (Samsungs) : 5 (Huaweis) = 2/3 : 3/5 : 5/?

To find the total number of Huaweis sold, we can set up an equation using the ratio. Let's assume the total number of Huaweis sold is 15. We can write the equation as:

5x = 15

where x is the multiplier for the ratio.

Solving for x

To solve for x, we can divide both sides of the equation by 5:

x = 15/5 x = 3

Finding the Total Number of Cell Phones Sold

Now that we have the value of x, we can find the total number of cell phones sold. We know that the ratio of iPhones to Samsungs to Huaweis is 2:3:5. We can multiply each part of the ratio by x to find the total number of each type of cell phone sold:

iPhones: 2x = 2(3) = 6 Samsungs: 3x = 3(3) = 9 Huaweis: 5x = 5(3) = 15

Calculating the Total Number of Cell Phones Sold

To find the total number of cell phones sold, we can add the number of iPhones, Samsungs, and Huaweis sold:

Total = iPhones + Samsungs + Huaweis Total = 6 + 9 + 15 Total = 30

Conclusion

In this article, we solved a mathematical problem involving the sale of cell phones in a store. We used the given ratio of iPhones to Samsungs to Huaweis and the number of Huaweis sold to find the total number of cell phones sold. Our solution shows that the total number of cell phones sold is 30.

Final Answer

The final answer is 30.

Additional Information

This problem can be solved using various mathematical techniques, including ratios, proportions, and algebra. The key is to understand the given ratio and use it to find the total number of cell phones sold.

Mathematical Concepts

This problem involves the following mathematical concepts:

Ratios: The ratio of iPhones to Samsungs to Huaweis is 2:3:5.
Proportions: We can set up a proportion to find the total number of Huaweis sold.
Algebra: We can use algebraic equations to solve for the value of x.

Real-World Applications

This problem has real-world applications in various fields, including business, economics, and statistics. Understanding ratios and proportions is essential in making informed decisions and analyzing data.

Future Directions

This problem can be extended to more complex scenarios, such as:

Finding the total number of cell phones sold in a store with multiple sales channels.
Analyzing the sales data to determine the most popular type of cell phone sold.
Using statistical techniques to predict future sales trends.

References

This problem is a classic example of a mathematical problem involving ratios and proportions. For more information on this topic, please refer to the following resources:

[1] Khan Academy. (n.d.). Ratios and Proportions. Retrieved from https://www.khanacademy.org/math/algebra/x2-2-1/x2-2-1-1
[2] Math Open Reference. (n.d.). Ratios and Proportions. Retrieved from https://www.mathopenref.com/ratios.html

Glossary

Ratio: A comparison of two or more numbers.
Proportion: A statement that two ratios are equal.
Algebra: A branch of mathematics that deals with the study of variables and their relationships.

FAQs

Q: What is the ratio of iPhones to Samsungs to Huaweis? A: The ratio is 2:3:5.

Q: How many Huaweis were sold? A: 15 Huaweis were sold.

Q: What is the total number of cell phones sold? A: The total number of cell phones sold is 30.

Q: What is the ratio of iPhones to Samsungs to Huaweis?

A: The ratio is 2:3:5.

Q: How many Huaweis were sold?

A: 15 Huaweis were sold.

Q: What is the total number of cell phones sold?

A: The total number of cell phones sold is 30.

Q: How did you find the total number of cell phones sold?

A: We used the given ratio of iPhones to Samsungs to Huaweis and the number of Huaweis sold to find the total number of cell phones sold.

Q: What mathematical concepts are involved in this problem?

A: Ratios, proportions, and algebra are involved in this problem.

Q: Can you explain the concept of ratios in more detail?

A: A ratio is a comparison of two or more numbers. In this problem, the ratio of iPhones to Samsungs to Huaweis is 2:3:5. This means that for every 2 iPhones sold, 3 Samsungs are sold, and 5 Huaweis are sold.

Q: How do you set up a proportion to solve this problem?

A: To set up a proportion, we can write an equation using the ratio. Let's assume the total number of Huaweis sold is 15. We can write the equation as:

5x = 15

where x is the multiplier for the ratio.

Q: Can you explain the concept of proportions in more detail?

A: A proportion is a statement that two ratios are equal. In this problem, we can set up a proportion to find the total number of Huaweis sold.

Q: How do you use algebra to solve this problem?

A: We can use algebraic equations to solve for the value of x. In this problem, we can divide both sides of the equation by 5 to find the value of x.

Q: Can you explain the concept of algebra in more detail?

A: Algebra is a branch of mathematics that deals with the study of variables and their relationships. In this problem, we can use algebraic equations to solve for the value of x.

Q: What are some real-world applications of this problem?

A: This problem has real-world applications in various fields, including business, economics, and statistics. Understanding ratios and proportions is essential in making informed decisions and analyzing data.

Q: Can you provide some examples of how this problem can be extended?

A: This problem can be extended to more complex scenarios, such as:

Finding the total number of cell phones sold in a store with multiple sales channels.
Analyzing the sales data to determine the most popular type of cell phone sold.
Using statistical techniques to predict future sales trends.

Q: Where can I find more information on this topic?

A: For more information on this topic, please refer to the following resources:

[1] Khan Academy. (n.d.). Ratios and Proportions. Retrieved from https://www.khanacademy.org/math/algebra/x2-2-1/x2-2-1-1
[2] Math Open Reference. (n.d.). Ratios and Proportions. Retrieved from https://www.mathopenref.com/ratios.html

Q: What is the final answer to this problem?

A: The final answer is 30.