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PROBLEM SOLVING Question & Answer Key Resources The Scholarly Unicorn's SAT Mathematics Advanced Guide
by Dr. Steve Warner

The Scholarly Unicorn's SAT Mathematics Advanced Guide
by Dr. Steve Warner PROBLEM SOLVING

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A group of students take a test and the average score is 90. One more student takes the test and receives a score of 81 decreasing the average score of the group to 87. How many students were in the initial group?