Question

Can somebody help me i've been stuck on this for awhile its because i dont get it

Answer 1

15 students aren’t wearing blue or white
Step-by-step explanation:
1/10 of 30 is 3
2/5 of 30 is 12
3+12=15
30-15=15

Answer 2

15 students aren't wearing blue or white

Step-by-step explanation:

1/10 of 30 = 3

2/5 of 30 = 12

3 + 12 = 15

30 - 15 = 15