SOLUTION: a ski jacket has been marked down on three occasions, first 20% off, then 25% off the new price, and finally 50% off the previous price. what is the overall percent saved? - pleas

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: a ski jacket has been marked down on three occasions, first 20% off, then 25% off the new price, and finally 50% off the previous price. what is the overall percent saved? - pleas      Log On


   

Question 1014277: a ski jacket has been marked down on three occasions, first 20% off, then 25% off the new price, and finally 50% off the previous price. what is the overall percent saved?
- please help me solve this question. my test is tomorrow and i barely know anything about combining percents.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +p+ = the original price
+p+-+.2p+=+.8p+ = price after 1st markdown
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+.8p+-+.25%2A.8p+=+.8p%2A%28+1+-+.25+%29+
++.8p%2A%28+1+-+.25+%29+=+.75%2A.8%2Ap+ = price after 2nd markdown
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+.75%2A.8%2Ap+-+.5%2A.75%2A.8%2Ap+=+.5%2A.75%2A.8%2Ap+ = price after 3rd markdown
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++.5%2A.75%2A.8%2Ap+=+.3p+ = the final price
+.3p+=+p+-+.7p+
70% of the original price is saved