SOLUTION: marisa is determined to do well in school this year her goal is to maintain an 85% average in her math class. so far she has two test scores in algebra, 72 and 89. What score must

Question 890340: marisa is determined to do well in school this year her goal is to maintain an 85% average in her math class. so far she has two test scores in algebra, 72 and 89. What score must she get on her next test in order for her to meet her goal of maintaining at least an 85% average?
I hope you can help...
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
her goal is to maintain an 85% average in her math class.
so far she has two test scores in algebra, 72 and 89.
What score must she get on her next test in order for her to meet her goal of maintaining at least an 85% average?
:
Let x = score on the 3rd test to maintain an 85% average
:
= 85
Multiply both sides by 3
x + 161 = 255
x = 255 - 161
x = 94% on her next test
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