SOLUTION: the average of 4 numbers is 50. three of the numbers are 40 57 and 51 what is the fourth number

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Question 680409: the average of 4 numbers is 50. three of the numbers are 40 57 and 51 what is the fourth number
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
%2840%2B57%2B51%2Bx%29%2F4+=+50
...
%28148%2Bx%29%2F4+=+50
...
148 + x = 4(50)
...
x = 200 - 148
highlight_green%28x+=+52%29 is the fourth number
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