SOLUTION: Four-fifth of a number is 20 less than origional number. find the number?

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Question 882457: Four-fifth of a number is 20 less than origional number. find the number?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
%284%2F5%29n+=+n-20
4n = 5n - 100
100 = n
and...
80 = 100-20