Question

The ratio of girls to boys in a school is 2:3
A) What fraction of these students are boys?
In year 8 the ratio of girls to boys 1:3
there are 300 students in year 8
B) work out the number of girls in year 8

Answer 1

Answer:

A) 3/5

B) 75

Step-by-step explanation:

3+2=5

So, 3 by 5

1(75):3(225)

Sum=300

Answer 2

Answer:

A.3/5

B.75

Step-by-step explanation:

Ratio of girls=2

Ratio of boys=3

Total ratio=2+3=5

A.

$fraction \: of \: boys = ratio \: of \: boys \div total \: ratio$

ratio of girls after 8 years =1

ratio of boys after 8 years =3

total ratio=3+1=4

no.of students=300

B.

no.of girls=1/4×300=75