Question

There are 30 passengers in a bus, out of which 9 are females. What is the percentage of females?​

Answer 1

Step-by-step explanation:

Let the number of boys be 3x

Let the number of girls be x

when 16 passengers got down from total & 6 girls got in

∴3x−16×(

4

3

)&x−16×(

4

1

)+6

↓ ↓

Ratio of boys Ratio of girls

3x−12 & x+2

∴ New Ratio is 2:1

3x−21:x+2::2:1

3x−12=2x+4

x=16

∴ Boys =3x=48

Girls

=x=16

64