Answer:
½
Step-by-step explanation:
12 girls
So, 20-12 = 8 boys
6 didn't bring lunch box
So, 8-6 = 2 brought lunch box
2 boys and 8 girls brought lunch box.
10/20 brought lunch box
Probability = 10/20 = ½
24 correct questions
(see picture)
hoping this helps
28 = 2 * 2 * 7
and
42 = 2 * 3 * 7
GCF = 2 * 7 = 14