Question

The ratio of the number of boys to the number of girls in a classroom is 2:3.Calculate the number of girls in the classroom if there are 26 boys in the classroom.

Answer 1

Answer:

Let the total number of students=100

Ratio of boys and girls=2:3

2+3=5

No. of boys =

5

2

×100=40

No. of girls=

5

3

×100=60

If 20% of the boys leaves the class then 20% of 40

100

20

×40=8

Now number of boys=40−8=32

New ratio=32:60⇒8:15

Answer 2

Answer:

No of girls =?

let no of girls =x

Ratio no. of boys to the no. of girls is=2/3

No of boys = 26

therefore,

Acc. to ques(ATQ),

2/3=26/x

X =39