Write an equation and solve it.
Katherine works flexible hours. This month she worked a total of 60 hours, which was 3 more than 5 times as many hours as she worked last month. How many hours did she work last month?
Let x be the number of hours Katherine worked last month.
The equation can be set up as follows: 60 = 5x + 3
Subtracting 3 from both sides of the equation, we get 60 - 3 = 5x + 3 - 3, or 57 = 5x.
Dividing both sides of the equation by 5, we get 57/5 = 5x/5, or 11.4 = x.
Katherine worked 11.4 hours last month.