SOLUTION: The price of a book was decreased by 20% two times in one year it now costs 180 $ less than the original price. What was the original price?

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Question 822416: The price of a book was decreased by 20% two times in one year it now costs 180 $ less than the original price. What was the original price?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

The price highlight_green%28x%29of a book was decreased by 20% two times in one year 

it now costs 180 $ less than the original price. What was the original price?

 x - .2x - .20(x-.2x) = $180        |multiplying thru by 10

     10x -2x -2x +.4x = 1800

               6.4x = 1800

                  x = $281.25

CHECKING our answer***

$281.25 - 56.25 - .20($225) = $281.25 - $56.25 - $45.00 = $180