SOLUTION: A book was sold for 120 at a loss of 10%. How much did originally cost?

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Question 1074001: A book was sold for 120 at a loss of 10%. How much did originally cost?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
A loss of 10% means the book was sold for 90% of the original cost. So:
.9n=120
n=120/.9=133.33 ☺☺☺☺