Empty bottle campaign slogan

10 yuan bought five bottles, and after drinking them, there were five caps and five empty bottles.

Three bottles of wine use four caps and four empty bottles. There are four bottle caps and four empty bottles left after drinking.

Three bottles of wine use four caps and four empty bottles. After drinking, there are three bottle caps and three empty bottles left.

Exchange 2 empty bottles for 1 bottle of wine. There are four bottle caps and two empty bottles left after drinking.

4 bottle caps, 2 empty bottles are 2 bottles of wine. After drinking, there are 2 bottle caps and 2 empty bottles left.

Replace 2 empty bottles with 1 bottle of wine. There are 3 bottle caps after drinking, 1 empty bottle.

So * * * can drink 5+3+3+1+2+1=15 bottles.

Extended data:

This kind of problem belongs to the problem of changing empty bottles for wine in mathematics.

Changing empty bottles for wine, also known as changing empty bottles for water, is a kind of interesting problem in mathematical operation, which comes from a promotion activity of fully recycling beer bottles by merchants and frequently appears in various exams.

This kind of question is not difficult as a whole, and candidates can easily score. It introduces an easy-to-operate problem-solving skill for candidates.

There is often a saying in the stem of this kind of problem that m empty bottles are replaced by n bottles of water, and we generally convert them into 1 how much water is in the bottle to operate, which will facilitate the solution.

For example, if four empty bottles are replaced by 1 bottle of water, there are four bottles = 1 bottle+1 bottle of water (water without bottles) and 1 bottle =13 bottles of water are introduced. If someone has 15 empty bottles, he can drink 15 ×.