SOLUTION: Suppose that you were taking a course that has 4 tests. The first three tests are worth 100 points each, and the fourth test is worth 200. To get an B in the course, you must have

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Question 260824: Suppose that you were taking a course that has 4 tests. The first three tests are worth 100 points each, and the fourth test is worth 200. To get an B in the course, you must have an average of at least 80 percent on the 4 tests. Your scores on the first 3 tests were 80, 76, and 87. What is the minimum score you need on the fourth test to get an B for the course?.

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%2880%2B76%2B87%2BX%29%2F%28100%2B100%2B100%2B200%29=80%2F100
80%2B76%2B87%2BX=400
243%2BX=400
X=157
Since the final test is out of 200,
157%2F200=Y%2F100
Y=78.5
You need to get at least a 78.5 on the final to get a B.