+204 A teacher has 15 weeks in which to teach six chapters. Write and then solve an equation that represents the number of lessons the teacher must teach per week if there is an average of 8.5 lessons per chapter.
+223 So let's call the lessons the teacher must teach per week L
Since L will be what we are trying to solve it will be isolated on one side of the equation.
The total amount of lessons the teacher will have to teach is 8.5 multiplied by 6 because there are an average of 8.5 lessons in each chapter and there are six chapters in total.
8.5 * 6 = total number of lessons
And if we divide the total number of lessons by the number of weeks (15), then we have the amount of lessons the teacher needs to teach each week.
So the equation would be:
(6 * 8.5 lessons) / (15 weeks) = L
L = 3.4 lessons per week
+223 Since we know the values, there is no need for variables. But if the problem said to make an equation with variables it should have told you what values should be variables. If not just replace the 6 with the variable, z, and the 15 with the variable, w.
Then it should look like 8.5z/w = L
Where z equals the total chapters needed to teach and w equals the weeks needed to teach it.
