It's 3/5 of the wall is made from brick how do you determine the height of the brick proportion of the wall

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?

The triangles are similar. what is the value of x? show your work.

How far could you drive on 50 gallons of gas