Question

3. in a class of 40 students, 3/5 of the total number of students are girls. How many students of the class are boys?

Answer 1

Answer:

Number of Boys in the class are 16.

Step-by-step explanation:

Given :

Total students in the class = 40

Number of girls in the class = $\dfrac{3}{5}$

To Find :

Number of Boys present in the class

Solution :

$\dfrac{3}{5}$ of the total strength of the class are girls. Find the $\dfrac{3}{5}$ of the total Students.

$\sf{\longrightarrow} \: \dfrac{3}{5} \: of \: 40$

$\sf{\longrightarrow} \: \dfrac{3}{5} \times 40$

$\sf{\longrightarrow} \:3 \times 8$

$\sf{\longrightarrow} \:24$

Number of girls in the class are 24.

$\rule{300}{1.5}$

Subtract Number of girls from total Students to get the number of Boys.

• Girls = 24
• Total students = 40

$\sf{\longrightarrow} \:40 - 24$

$\sf{\longrightarrow} \:16$

$\therefore$ Number of Boys in the class are 16.

Answer 2

Answer:

Number of Boys in the class = 16.

Step-by-step explanation:

Given Problem:

In a class of 40 students, 3/5 of the total number of students are girls. How many students of the class are boys?

Solution:

To Find:

Total students in the class = 40

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Method:

Given that,

Total students in the class = 40  

Number of girls in the class = 3/5 = $\sf \dfrac{3}{5}$

Now,

3/5 is total strength of girls are present in the class.

First of all we have to find:

3/5 of the total students.

So,

$\sf => \dfrac{3}{5}\; of\; 40 \quad \quad (40\; is\; the\; total\; no.\; of\; students)\\\\\ => \dfrac{3}{5}\times 40\\\\\ => 8\times3\\\\\ =>24\\\\\ =>Hence,The\;number\;of\;total\;girls = 24.$

Now,

It's simple:

We have to take away the number of girls from total Students to know the number of Boys.

So,

We know that,

=>Girls = 24

=>Total students = 40

So,

=> 40 - 24 = 16

=> 16

Hence,

The Number of Boys in the class = 16.