SOLUTION: A man sold a book by mistake at 120% of the marked price instead of discounting the marked price by 20%. If he sold the book for P14.40, what was the price for which he should have

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Question 1056383: A man sold a book by mistake at 120% of the marked price instead of discounting the marked price by 20%. If he sold the book for P14.40, what was the price for which he should have sold the book?
Answer by ikleyn(52866) About Me  (Show Source):
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A man sold a book by mistake at 120% of the marked price instead of discounting the marked price by 20%.
If he sold the book for P14.40, what was the price for which he should have sold the book?
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Let x = marked price of the book.

Then 1.2x = P14.40, according to the condition, which gives

x = 14.40%2F1.2 = P12.00.

Then 0.8*12.00 = P9.60 is the price for which he should have sold the book.

Answer. P9.60.