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A class contains 25 children, of which 6 are girls. What are the percentages of the class of boys?

Answer
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Hint:In this problem, first we need to find the number of boys in the class by subtracting the number of girls from the total number of students. Then we can find the percentage of boys by using the obtained value that is the number of boys divided by Total number of students in the class and multiplied by 100. To get the percentage of the number of boys in the class.

Complete step by step answer:
Before we go to the problem, first of all we need to understand the concept of percentage.Percentage means a number or a ratio represented in the form of a fraction of 100. Percentage can be calculated by the Actual value divided by Total values and multiplied by 100.In other words, percentage is defined as how much of one quantity is made by another quantity and it is evaluated in terms of 100.

Now, we come to the problem in this question, it is given that the total number of students in the class is 25 and the number of girls is 6. But we have to find the number of boys for that we need to subtract number of girls from total number of students in the class that means,
Number of boys \[=25-6=19\]
Therefore, the number of boys is 19. Now, we have to calculate the percentage of the number of boys. General formula for the percentage is given by
Percentage $(\%)$ \[=\dfrac{Actual\,Value}{Total\,Value}\times 100\]

According to this problem formula will become,
Percentage $(\%)$ \[=\dfrac{\text{Number of Boys in the class}}{\text{Total number of students in the class}}\times 100\]
As we have calculated the number of boys in the class is 19.In the problem it is given the total number of class is 25.By substituting these values in the formula, we get:
Percentage $(\%)$ \[=\dfrac{19}{25}\times 100\]
By simplifying this we get:
Percentage $(\%)$ \[=\dfrac{1900}{25}\]
By further solving this fraction we get:
Percentage $(\%)$ \[=76\%\]

Therefore, there are $76\%$ of boys in the class.

Note: Probably students may have a chance of making a mistake while solving this problem that they will write 6 in the numerator in the formula instead of 19 and end up with the wrong answer. Because you have not asked to calculate the percentage of the number of girls. But here the question is asked about the percentage of boys. Hence, Students have to read the question completely then according to that we have to solve and get the answer.
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