Each homework set is weighted equally, regardless of the number of points it is worth. For each homework set, calculate the percentage score by dividing the number of points received by the total number of points. Drop the two homeworks with the lowest percentage scores. Take the average of the remaining ten homework percentage scores. This is your homework grade (HG).
Exam 1 was out of 90 points. Divide your grade by 90 to obtain a percentage score. This is your exam 1 grade (E1).
Exam 2 was out of 100 points. Divide your grade by 100 to obtain a percentage score. This is your exam 2 grade (E2).
Your project score is out of 10. Divide your grade by 10 to obtain a percentage score. This is your project grade (PG).
Your grade out of 100 is calculated as follows:
Grade = HG*40 + E1*25 + E2*25 + PG*10
To see what scores you need on the project to get a particular grade, do the following. Calculate HG, E1, and E2. Your points so far are equal to
PSF = HG*40 + E1*25 + E2*25
out of a possible 90 points.
To get a B, you need 80 total points. Thus you need a total of NB = 80 – PSF more points to get a B. If PG*10 is greater than NB you will get a B. Notice that if you get perfect on the project you could earn a maximum of 10 more points. Thus if PSF < 70 then you cannot get a B.
You can repeat this calculation for A, C, D using 90, 70, and 60 points, respectively.
Of course, if your grade is close to the boundary, there exists the possibility (but no guarantee) that you will be rounded up.