Suppose that you are taking a course that has 4 tests. the first three tests are for 100 points each and the fourth test is for 200 points. 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 72, 84, and 74. what is the minimum score you need on the fourth test to get an b for the course? .

You need an minimum score of 170 on the fourth test to get an b for the course.

Explanation

The first three tests are for 100 points each and the fourth test is for 200 points. So the total points in 4 tests

To get an b in the course, you must have an average of at least 80% on the 4 tests. So, the minimum score needed to get an b :

Your scores on the first 3 tests were 72, 84, and 74.

So, the minimum score you need on the fourth test will be:

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