SOLUTION: Rachel is striving for a 90% average in math. Her grades on the first for tests are 86,82,93 and 91. What does she need on the 5th test to get a 90 average

Question 860753: Rachel is striving for a 90% average in math. Her grades on the first for tests are 86,82,93 and 91. What does she need on the 5th test to get a 90 average
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

Let x represent 5th test score

 solve for x    

 

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