Question

38 boys and 22 girls visit a zoo, 33 of these children have a voucher. Twice as many boys as girls do not have a voucher. Complete the frequency tree

Answer 1

Answer: 20 boys have a voucher

13 girls have a voucher

Step-by-step explanation:

Answer 2

Answer:

9 girls and 18 boys don't have a voucher

Step-by-step explanation:

Data:

boys = 38

girls = 22

Total = 60

Children who have a voucher = 33

Children who don't have a voucher = 60-33 = 27

Twice as many boys as girls do not have a voucher

Girls who don't have a voucher: x

Boys who don't have a voucher: 2x

girls without voucher + boys without voucher: x + 2x = 27

3x = 27

x = 27/3

x = 9

Girls who don't have a voucher: x=9

Boys who don't have a voucher: 2x = 2(9) = 18

For frequency tree:

Total students: 60

Boys : 38

Boys who don't have a voucher : 18

Boys who have a voucher: 20

Girls: 22

Girls who don't have a voucher: 9

Girls who have a voucher: 13