Katy makes some brownies to eat throughout the week. She eats 5 on Monday and twice as many on Tuesday. After she has eaten the brownies on Tuesday, all of the brownies she made are gone. How many brownies did Katy make?
On Tuesday, Katy ate 5 brownies * 2 = <<5*2=10>>10 brownies.
As she has eaten all of the brownies she made, she must have made 5 Monday brownies + 10 Tuesday brownies = <<5+10=15>>15 brownies.
#### 15