A nail salon was completely booked at 2 pm for manicures.  Each manicure costs $20.00 per client so the salon made $200.00.  If there are 210 fingers in the salon at 2 pm, and everyone has 10 fingers, how many people in the salon are not clients?
The salon made $200.00 and they charge $20.00 per client so there are 200/20 = <<200/20=10>>10 clients in the salon
There are 210 fingers in the salon and everyone has 10 fingers so there are 210/10 = <<210/10=21>>21 people in the salon
If there are 21 people in the salon and 10 are clients then there are 21-10 = <<21-10=11>>11 people in the salon that are not clients
#### 11