SOLUTION: if you have scores of 82, 77 and 87 on the first three tests for math 100, what score would you have to get on the fourth test to earn a B (83% average)? Can you earn an A-? (90

Algebra ->  Average -> SOLUTION: if you have scores of 82, 77 and 87 on the first three tests for math 100, what score would you have to get on the fourth test to earn a B (83% average)? Can you earn an A-? (90      Log On


   

Question 911145: if you have scores of 82, 77 and 87 on the first three tests for math 100, what score would you have to get on the fourth test to earn a B (83% average)?
Can you earn an A-? (90% average)? How or why not?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%2882%2B77%2B87%2BT%5B1%5D%29%2F4=83
82%2B77%2B87%2BT%5B1%5D=332
Now solve for T%5B1%5D.
.
.
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%2882%2B77%2B87%2BT%5B2%5D%29%2F4%3E=90
82%2B77%2B87%2BT%5B2%5D%3E=360
Solve for T%5B2%5D to see if it's possible.