SOLUTION: you currently have had three test grades with a result of 91, 86, and 89. there is one test left and you want to know what is the lowest grade you can get on this test to have a

Algebra ->  Algebra  -> Average -> SOLUTION: you currently have had three test grades with a result of 91, 86, and 89. there is one test left and you want to know what is the lowest grade you can get on this test to have a      Log On

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 Question 261743: you currently have had three test grades with a result of 91, 86, and 89. there is one test left and you want to know what is the lowest grade you can get on this test to have an a average (90%) in the class.How would you translate and solve this problem?Answer by richwmiller(9143)   (Show Source): You can put this solution on YOUR website!(91+86+89+x)/4=90 I get 94 which makes sense since 91 and 89 average to 90 so the 86 and the next test must average to 90