The students in naomi's class sold calendars for a fund-raiser this year and last year. this year, the selling price of each calendar was 13.25. the price this year represents 6% more than the selling price of each calendar last year. what was the selling price of each calendar last year ?

We'll use the variable x to represent last year's price. First, we have to set up an equation:

We get this equation because $13.25 is 6% MORE than last year's price, meaning we need to add the original price to the increase. Next, we combine like terms and solve for x:


Last year's price was $12.50. 

Hope this helps!