Here's a simple way to compute grades when there done as points out of a possible number of points:
score / 100 = points / total points
Since you don't know score, we'll replace it with a question mark:
? / 100 = points / total points
Breaking down the formula with some algebra, we're going to solve for ? :
total points x ? = 100 x points
? = 100 x points / total points
So, just plug in the numbers and solve:
? = 100 x (144) / (200)
? = 14400 / 200
? = 72
Sorry to simplify it so much ... it was for a music class, so I didn't know how much algebra you know. If you know algebra, its:
x = score
x / 100 = 144/200
200x = 14400
x = 14400 / 200 = 72.