Summer is approaching and the weather is getting hotter. A certain store has raised the price of a certain carbonated drink by 10% and lowered the price of a certain fruit drink by 5%.

Solution: Suppose carbonated drinks cost x yuan per bottle before price adjustment, and fruit juice drinks cost 7-X yuan per bottle before price adjustment. According to the question:

3(1+10% )x +2(1-5%)(7-X)=17.5

Solution: x =3

Answer: Carbonated drinks cost 3 yuan per bottle before price adjustment, juice Beverages cost 4 yuan per bottle before price adjustment.