Sunday’s class is half the size of Saturday’s class with 20 kids so Sunday has 20/2 = <<20/2=10>>10 kids
She has 20 kids on Saturday and 10 kids on Sunday for a total of 20+10 = <<20+10=30>>30 kids
She charges $10.00 per kid and teaches 30 kids over the weekend so she makes 10*30 = $<<10*30=300.00>>300.00
#### 300