Answer:
15 girls
Step-by-step explanation:
Let the number of people in the class be x
70% = 0.70
0.70x = boys
So...
0.70x = 35
Divide both sides by 0.70...
x = 50
There are 50 people in the class
The number of girls is the number of boys minus the number of boys
50 - 35 = 15
There are 15 girls
-Chetan K
