SOLUTION: Mary's average grade on 5 math tests was 88.� If her lowest grade was dropped, her average on the other 4 tests would be 90.� What was Mary's lowest grade in the original set of 5

Question 582508: Mary's average grade on 5 math tests was 88.� If her lowest grade was dropped, her average on the other 4 tests would be 90.� What was Mary's lowest grade in the original set of 5 grades? (72 - 3)
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The sum of her grades on the 5 tests was

With lowest grade dropped, the sum of
the remaining 4 grades is

Her lowest grade was
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