SOLUTION: Last week's gas prices at a local gas station decreased by 4% this Monday, but by this current weekend, they have increased by 5%. 15. The current price this weekend is %

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Last week's gas prices at a local gas station decreased by 4% this Monday, but by this current weekend, they have increased by 5%. 15. The current price this weekend is %      Log On


   

Question 939776: Last week's gas prices at a local gas station decreased by 4% this Monday, but by this current weekend, they have increased by 5%.

15. The current price this weekend is % of last week's prices before the changes. (Round to the nearest tenth.)
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +p+ = last week's price
+p+-+.04p+=+.96p+ is this Monday's price
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+.96p+%2B+.05%2A.96p+ is current weekends price
+.96p+%2B+.048p+=+1.008p+
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The fraction increase over last week's price is:
+%28+1.008p+-+p+%29+%2F+p+=+.008+
The % increase over last week's price is:
+%28+.008+%29%2A100+ = .8%