Question

There are 20girls and 25 boys in the class
ao) what is the ratio of number of girls to the number
of boys?
b) what is to rotio of number of girls to the total
number of students in the class?​

Answer 1

Answer:

1. 4:5
2. 4:9

Step-by-step explanation:

Total no of students= T = 45

No. of girls = G = 20

No. of boys= B = 25

• a) G/B= 20/25= 4/5
• b) G/T= 20/45=4/9

HOPE IT HELPS

Answer 2

Given :

• No.of girls in class = 20
• No.of boys in class = 25

To find :

• a) ratio of no.of girls to the no.of boys
• b) ratio of number girls to the total no.of students

Solution :

a) ratio =${\dfrac{ no.of\ girls }{no.of\ boys}}$

$\implies{ratio={\dfrac{ 20 }{25}}}$

$\implies{ratio={\dfrac{{\cancel { 20}}_{4} }{{\cancel {25}}_{5}}} }$

$\implies{\boxed{ratio\ of\ girls\ to\ boys =\ 4:5}}$

.

.

b) ratio =${\dfrac{ no.of\ girls }{total\ no.of\ students}}$

Total no.of students in class = 20 + 25 = 45

$\implies{ratio={\dfrac{ 20 }{45}}}$

$\implies{ratio={\dfrac{{\cancel { 20}}_{4} }{{\cancel {45}}_{9}}} }$

$\implies{\boxed{ratio\ of\ girls\ to\ total\ students\ in\ class =\ 4:9}}$