Question

There are 30 pupils in a class. 16 of the pupils are girls. What is the ratio of the number of boys to the number of girls ?​

Answer 1

Answer:

8:7

the answer is 8:7

Mark me as a brainlist

Answer 2

Answer:

Step-by-step explanation:

b, g={14,16}. There are 16 girls in the class.

PREMISES

7:8::x:y

b+g=30 and b/g=7/8

ASSUMPTIONS

Let b=the number of boys in a class

Let g=the number of girls in a class

Let b+g=the number of pupils in a class (30)

CALCULATIONS

b+g=30 and b/g=7/8

b=7g/8

7g/8+g=30

7g/8+8g/8=30

15g/8=30

8(15g/8)=8(30)

15g=240

15g/15=240/15

g=

16

and,

if g=16, then

b=30-g

b=30–16

b=

14