I have an 84% in class and turning in my notebook will be 20% of my grade. What will my class grade be?

Answer this question only if you know the 30 points and

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

Which expression is equivalent to the expression shown?