Question

25. In a class of 40 students, 3/5 of the total students are girls. How many boys are there in the class?
a) 24
b)20
c)16
d)15
with process​

Answer 1

GIVEN :-

• Total number of students In a class = 40
• number of girls student = 3/5 of 40

TO FIND :-

• Number of boys .

SOLUTION :-

➵ No. of girls = 3/5 of total students

➵ 3/5 × 40

➵ 8 × 3

➵ 24 girls

⇰ No.of boys = Total students - No.of girls

⇰ 40 - 24

⇰ 16 boys

Hence the No.of boys in a class are 16.

VERIFICATION :-

↣ Total students = girls + boys

↣ 40 = 24 + 16

↣ 40 = 40

L.H.S = R.H.S

HENCE VERIFIED

Answer 2

Step-by-step explanation:

${\red{\underline{\underline{\bold{Given:-}}}}}$

• Total number of students in a class = 40

• ⅗ of the students are girls

${\blue{\underline{\underline{\bold{To\:Find:-}}}}}$

• Number of boys in the class

${\green{\underline{\underline{\bold{Solution:-}}}}}$

Let the number of boys in the class be x

Total number of students

$\bf \: \dfrac{3}{5} \: are \: \: girls$

$\bf \: Number \: \: of \: \: girls \: \: = \dfrac{3}{5} \times 40$

$\bf = 3 \times 8$

$\bf = 24$

According to the question :-

Number of boys + Number of girls = 40

$\implies \bf x \: + \: 24 \: = \: 40$

$\implies \bf x \: = \: 40 \: - \: 24$

$\implies \bf x \: = 16$

Therefore:-

$\boxed{ \bf Number \: \: of \: \: boys \: \: = \: \: 16}$