SOLUTION: laura has scored 64, 62 and 71 on her previous three tests. What score does she need on her next test so that her average is 64?

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Question 732410: laura has scored 64, 62 and 71 on her previous three tests. What score does she need on her next test so that her average is 64?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
(64+62+71+x)/4=64
197+x=64*4
x=256-197
x=59