the ratio of boys and girls 7:5. if the number of boys are 8 more than girl than what is the total number of student in class.
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Answered by
2
7:5 = x+8 : x
7x = 5x + 40
2x = 40
x = 20
therefore boys= 28
total no. of students = 20 + 28
= 48
7x = 5x + 40
2x = 40
x = 20
therefore boys= 28
total no. of students = 20 + 28
= 48
Answered by
3
Given ratio of boys and girls = 7:5
Let no.of boysbe 7x
no.of girls be 5x
According to the question
7x = 5x+8
⇒ 7x -5x = 8
⇒ 2x = 8
⇒ x =8/2
∴ x= 4
∴No.of Boys = 7x = 7(4) = 28
No.of Girls = 5x = 5(4) = 20
Let no.of boysbe 7x
no.of girls be 5x
According to the question
7x = 5x+8
⇒ 7x -5x = 8
⇒ 2x = 8
⇒ x =8/2
∴ x= 4
∴No.of Boys = 7x = 7(4) = 28
No.of Girls = 5x = 5(4) = 20
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