Question

A classroom 120 student hai ji mein se 84 ladki hai to kitne percent ladkiyon ki

Answer 1

The percentage of girls in the classroom is said to be 70%.

Percentage is a value that is in the form of a fraction with its total considered to be the number hundred which means is the amount out of the whole number 100.

A percentage value is always expressed in terms of 100 as the total or the entire value out of which a part of this total value is the percentage value.

Thus, the denominator here is always considered as 100 as it is the value of the whole.

Here, it is given that in a classroom there are a total of 120 students that are present.

If this total amount is divided into two divisions based on the gender category there will be students that are either male or female.

The total number of male students as well as the total number of female students will be given as the total strength of the class or the total number of students in the class.

It is given that there are 84 female students that are present. Thus, out of the total number of students present there are 84 females.

The whole value is hence 120 out of which the female part is 84 and hence the fraction to express this statement will be given as:

$\frac{84}{120}$

Now, this fraction needs to be expressed as a percentage value. In-order to do this the given fraction needs to be converted into a percentage value which is a whole number out of 100.

This percent value will be the equivalent percentage of female students present in the class.

To convert to the percentage value the part of the total value, that is, the equivalent fractional form is multiplied with 100. Thus we have:

$\frac{84}{120}\times100$

$\implies \frac{840}{12}=70$

Thus, the percentage value of female students in the classroom is 70%.

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Answer 2

The percentage of boys = 30%

Given,

Total no. of students in the classroom = 120

No. of girls = 84

To Find,

percentage of boys in the classroom

Solution,

This problem could be solved using a very simple method.

We have been given that a classroom has 120 student.

Also, we have been given that 84 of them are girls.

Assuming that the genders considered here are those assigned at birth,

the no. of boys = total no. of students - no. of girls

⇒ no. of boys = 120 - 84

⇒ no. of boys = 36

We have to find the percentage of boys in that class.

Percentage:

• A percentage is a figure or ratio stated as a fraction of 100 in mathematics.
• The abbreviations "pct," "pct," and occasionally "pc" are also used.
• The percent sign, " % ", is frequently used to signify it.
• A percentage is a number without dimensions and without a standard measurement.

The percentage of no. of boys could be found out by the following:

⇒ no. of boys/total no. of students × 100 %

⇒ 36/120 × 100 %

⇒ 0.3 × 100 %

⇒ 30 %

Therefore, the percentage of boys = 30%

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