SOLUTION: I have tried to solve this percentage problem: The price if a magazine subscription rose 5% this year. If the subscription now cost $21.00, how much did it cost last year. I set up

Question 198955: I have tried to solve this percentage problem: The price if a magazine subscription rose 5% this year. If the subscription now cost $21.00, how much did it cost last year. I set up equation up like this:
x-0.5x= 21
I think that I suppose to add like terms but I am not sure.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Since "The price if a magazine subscription rose 5% this year" and "the subscription now cost $21.00", this means that

Start with the given equation.

Combine like terms.

Divide both sides by 1.05

Divide

So it cost $20 last year.
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