SOLUTION: Vanessa's average score on 3 tests is 78. What is the least that she can score on her fourth test so that her average will be at least 81?

SOLUTION: Vanessa's average score on 3 tests is 78. What is the least that she can score on her fourth test so that her average will be at least 81?

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Question 1055359: Vanessa's average score on 3 tests is 78. What is the least that she can score on her fourth test so that her average will be at least 81?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
So her total test scores are,

Adding the fourth score would make it,

So,

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