Posted by **Jacqueline** on Wednesday, December 30, 2009 at 8:12am.

To get an A in history, a student must score an average of 90 on four papers. Scores on the first three papers were 92, 83, and 88. What is the lowest score that a student can make on the last paper and still get an A?

- math -
**MathMate**, Wednesday, December 30, 2009 at 8:58am
An average of 90 on four papers means that the total of the four papers must be:

4*90 = 360

If you know the scores of three of the four papers, can you find the minimum of the fourth?

- math -
**Rachel**, Thursday, December 31, 2009 at 5:27pm
The lowest score the student could make on the last paper and still get an A is 97%. So all the test scores would be: 92, 83, 88, and 97.

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