If you drink 50% of a box of drinks, there are 18 bottles left. If you drink 6 bottles, how many bottles are left?

If you drink 50% of a box of drinks, there are 18 bottles left. If you drink 6 bottles, how many bottles are left?

Drink 50% and there are 18 bottles left
So there are 36 bottles in a box
If you drink six, you have 30 left

If you drink 50% of a box of drinks, there are still 10 bottles left; if you drink 6 bottles, how many% are left

Twenty percent

27 bottles of drinks, one of which is deteriorated (a little heavier). You can find out the defective products by weighing at least () times

27 bottles of drinks, one of which is deteriorated (a little heavier). You can find out the defective by weighing at least (3) times
27（9.9.9）
9（3.3.3）
3（1.1.1）

There are 6 bottles of drinks, one of which is of different quality. How many times can you find it if you weigh it with a balance?

Weigh it at least three times, divide it into two bottles and one portion, three portions in total, set as a portion, B portion and C portion
First put a, B, then put a, C. If a and B are balanced, then call a and C, and you will know whether the weight is light or heavy
If a and B are not balanced, then we can also know when we call them a and C
After getting light or heavy, suppose that the bottles with different mass are light (the same is true for heavy), weigh the two bottles with different mass respectively, and the light one is to be picked out