FORTY + TEN + TEN = SIXTY


Each of the letters in the equation below represents one of the digits from 0 to 9. Determine which digit corresponds to each letter. 
        FORTY
          TEN
        + TEN
        -----
        SIXTY

Source: Martin Gardner's Mathematical Diversions
[Taken from "Ken's Puzzle of the Day" February 28, 1994]
Solution
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