Janice makes during her first 40 hours of work $10/hour * 40 hours = $<<10*40=400>>400.
Janice works 60 hours - 40 hours = <<60-40=20>>20 hours during her overtime.
Janice makes from working overtime $15 * 20 = $<<15*20=300>>300.
The total she makes a week is $400 + $300 = $<<400+300=700>>700.
#### 700