Determining the Price of Multiple Items: A Simple Math Example

Mathematics is a powerful tool that helps us solve everyday problems. A common scenario involves determining the cost of a certain number of items when the cost of a different number is known. For instance, if you know that 5 pens cost Rs. 25, how can you find out the cost of 3 pens? This article will demonstrate how to use simple mathematical operations to solve such problems.

Understanding the Problem

The problem at hand is to find the cost of 3 pens, given that 5 pens cost Rs. 25. The first step in solving this problem is to determine the cost of a single pen. This can be done by dividing the total cost by the number of pens, which is a straightforward process of division.

Step-by-Step Solution

Let's break down the problem step by step:

Divide the total cost (Rs. 25) by the number of pens (5) to find the cost per pen. Multiply the cost per pen by the number of pens you need (3 in this case).

The mathematical operations involved are as follows:

Step 1: Calculate the Cost Per Pen

The formula is: Cost per pen Total cost / Number of pens Substitute the values: Cost per pen Rs. 25 / 5 Perform the division: Cost per pen Rs. 5

Step 2: Calculate the Cost of 3 Pens

The formula is: Total cost Cost per pen * Number of pens needed Substitute the values: Total cost Rs. 5 * 3 Perform the multiplication: Total cost Rs. 15

Conclusion

To summarize, if 5 pens cost Rs. 25, then 3 pens will cost Rs. 15. This simple calculation is useful in various real-world scenarios, such as shopping, budgeting, and even in business transactions.

Applications

This concept of breaking down problems into simpler calculations using basic arithmetic operations can be applied in several areas:

Shopping and Budgeting: Calculating the cost of items that you need to buy. Business: Understanding pricing and profit margins. Education: Reinforcing mathematical concepts in practical scenarios.

Conclusion

In conclusion, understanding how to determine the price of multiple items from the cost of a smaller quantity is a valuable skill. Whether you are a student, a shopper, or a business owner, such basic mathematical skills can help you make informed decisions and solve practical problems efficiently.

Keywords

The keywords for this article are cost calculation, price determination, and cost per item.