Answer:
-5 girls
-15 boys
[tex]\frac{15
}{20}[/tex]
Step-by-step explanation:
for girls it's 1/4=5/20 so 4x5=20 and 1x5=5
for boys you would subtract the total number, 20, by the number of girls there,(20-5) leaving us with [tex]\frac{15}{20}[/tex]
Then for third question, it's [tex]\frac{15}{20}[/tex]