Answer:
88
Step-by-step explanation:
Let's see - if there are 3/5 girls, there must be 2/5 boys. Assuming everyone in the class is binary, of course.
So 2/5 of 220 is the number of boys. When you see "of," always think multiplication!
2/5 of 220
2/5 * 220 = 88 boys in 7th grade
16
( ) ,(5),(20),(0),(7),(5,7),(5,20,(5,0),(20,0),(20,7),( 0,7) (5,20,0),(5,20,7),(20,0,7), , (5,0,7) , (5 ,20,0 ,7)
If I got what you where asking the answer should be -79.2.