Question

(1) 10 students of Class X took part in a Mathematics quiz. If the number of girls is 4
more than the number of boys, find the number of boys and girls who took part in
the quiz..​

Answer 1

Answer:

Given that,

Total number of students who took part in the the quiz =10

Let, the number of boys who took part in the quiz =x

and, number of girls who took part in the quiz =y

According to question,

x+y=10 ...........(1)

y=x+4 ..........(2)

By putting value of x=10−y in equation(2), we get

y=10−y+4

or, 2y=14

So, y=

2

14

=7

and x=10−7=3

Therefore,

Number of boys who took part in the quiz =3

Number of girls who took part in the class =7

Answer 2

Required Answer:

$\huge{\boxed{\sf{Number\: of \:boys=3}}}$

$\huge{\boxed{\sf{Number\: of \: girls=7}}}$

Question:

10 students of Class X took part in a Mathematics quiz. If the number of girls is 4 more than the number of boys, find the number of boys and girls who took part in

the quiz

Given:

• Total number of students=10 students

Let:

• number of boys = x
• number of girls= x+4

Answer:

• No. of girls+ No. of boys=Total number of students
• x+x+4=10
• 2x=10-4
• 2x=6
• x=3

number of boys = x

.°.number of boys=3

number of girls= x+4

.°.number of girls=3+4

number of girls=7