SOLUTION: on her last two math tests. leah had scores of 83 and 92. what must leah score on the next test to average a 90 on all three test

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Question 808191: on her last two math tests. leah had scores of 83 and 92. what must leah score on the next test to average a 90 on all three test
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
two ways to do this
90+7-2=95
other longer way
(83+92+x)/3=90
(x+175)/3=90
x+175=270
x=95