SOLUTION: Plz hlp me solve this question in a cls the ratio of boys and girls is 4:5.half of boys and half of girls participated in the youth festival.1/6 ie. 30 of the total student popula

Question 1042567: Plz hlp me solve this question in a cls the ratio of boys and girls is 4:5.half of boys and half of girls participated in the youth festival.1/6 ie. 30 of the total student population participated in ncc camp. What is the no of girl student in the cls?
Found 2 solutions by addingup, MathTherapy:
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
1)
1/6x = 30
x = 30*6 = 180 total students
:
2)
4:5 ratio means that out of 4+5=9 students 4 are girls
180/9 = 20 and 20*4 = 80 are girls
and 20*5 = 100 are boys
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!

Plz hlp me solve this question in a cls the ratio of boys and girls is 4:5.half of boys and half of girls participated in the youth festival.1/6 ie. 30 of the total student population participated in ncc camp. What is the no of girl student in the cls?

If represents 30 students, then there are 180 students
4x + 5x = 180
9x = 180
x = , or 20
Therefore, there are: 5(20), or
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