How Many Girls Are in a Class of 60 Students? A Simple Percentage Calculation

Mathematics is a fundamental tool for understanding the world around us. One of the most straightforward mathematical concepts is determining the percentage of one group in a larger group. This article will walk you through a practical example: if a class consists of 60 students and 45 of them are girls, how many girls are there and what percentage do they represent?

Understanding the Problem

The question is simple: if you have a class of 60 students and 45 of them are girls, how many girls are there and what percentage of the class does this represent?

Step 1: Calculate the Number of Girls

Given the total number of students is 60 and 45 of them are girls, the number of girls is clearly 45. This can be written as:

45 girls out of 60 students.

Step 2: Calculate the Percentage of Girls

To find the percentage of girls in the class, we use the formula:

(frac{45}{60} times 100)

Calculating this:

( frac{45}{60} frac{3}{4} times 100 75% )

Therefore, 45 girls represent 75% of the class.

Solution for Variations

Let's consider a more detailed exploration of the given solution:

Using the same method, we can derive that:

(frac{15}{60} frac{x}{100})

Solving for x:

( x frac{15}{60} times 100 frac{3}{12} times 100 frac{1}{4} times 100 25 %)

Therefore, 15 girls represent 25% of the class.

Conclusion

The problem of finding the number of girls and their percentage in a class of 60 students is a straightforward calculation. The example clearly shows that 45 girls represent 75% of the class, while 15 girls represent 25%.

It's also worth noting that while the question may seem trivial, it reinforces the importance of understanding basic mathematical principles in everyday scenarios. Whether it's a simple calculation or a more complex problem, mastering these concepts is crucial for making informed decisions and solving real-world problems.