SOLUTION: The sum of a number and 90, divided by 12, results in one-third of the number.

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Question 1032179: The sum of a number and 90, divided by 12, results in one-third of the number.
Answer by Cromlix(4381) About Me  (Show Source):
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Hi there,
The sum of a number and 90,
divided by 12, results in
one-third of the number.
Make number = x
(x + 90)/12 = x/3
Cross multiply:
12(x) = 3(x + 90)
12x = 3x + 270
Collect like terms:
12x - 3x = 270
9x = 270
x = 30
The number is 30.
Hope this helps :-)