SOLUTION: the mean of x and 4x is 10, x = ?

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Question 1044277: the mean of x and 4x is 10, x = ?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
(x + 4x)/2 = 10

5x/2 = 10

5x = 20

x = 4