4. Your grade point average (GPA) is a form of a weighted average. The most common weight for grades is A: 4 points, B: 3 points, C: 2 points, D: 1 point, F: 0 points. To the find a GPA: . Multiply the points for each grade by the number of credit hours for the course. Find the sum of these products. . Divide this sum by the total number of credit hours taken. Find the GPA (to the nearest tenth) for 3 credit hours of A in astronomy, 4 credit hours of B in Geometry, 3 credit hours of C in sociology, and 4 credit hours of A in biology