Six Carrots subtract so then it says the rabbits took and ate five carrots so then the equation would be 6-5 and 6-5=? . So to find this you would have to subtract 6-5=? and 6-5=1 . So there you're answer is simple.
If she starts with 55000 per year, and she get 1700 per year extra, after fifteen years this extra will be 1700*15, or 25500. Add this to her original salary of 55000 per year to get $80500.