Can someone explain the answer to this?

the answer is 24

Step-by-step explanation:

I started from the bottom and realized that 3 is half of 6 after that I kept going. so since 3 is half of 6, 6 is half of 12 and 12 is half of 24 and since there is only three kids you stop there. I hope this makes sense. sorry if it doesn't <3

probability for j is 1/4

while

a is 1/6

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls