No, alcohol does not "stack" in the way you described. Mixing a 60% proof alcohol with a 40% proof alcohol will not result in a 100% proof alcohol.
Proof is a measure of the alcohol content in a beverage, and it is typically twice the percentage of alcohol by volume (ABV). For example, a 60% proof alcohol would be approximately 30% ABV (60 divided by 2), and a 40% proof alcohol would be around 20% ABV (40 divided by 2).
When you mix two different alcoholic beverages with varying alcohol percentages, the resulting alcohol content in the mixture will be somewhere between the two original percentages. The final ABV of the mixture can be calculated by taking the weighted average of the individual ABV values based on the volume of each component.
Here's an example to illustrate:
Let's say you mix 100 ml of the 60% proof alcohol (approximately 30% ABV) with 100 ml of the 40% proof alcohol (approximately 20% ABV).
Total volume of mixture = 100 ml + 100 ml = 200 ml
To calculate the ABV of the mixture, you can use the following formula:
ABV of Mixture = [(Volume of Alcohol A * ABV of Alcohol A) + (Volume of Alcohol B * ABV of Alcohol B)] / Total Volume of Mixture
ABV of Mixture = [(100 ml * 30% ABV) + (100 ml * 20% ABV)] / 200 ml ABV of Mixture = (3000 + 2000) / 200 ABV of Mixture = 5000 / 200 ABV of Mixture = 25%
So, when you mix a 60% proof alcohol with a 40% proof alcohol in equal volumes, you will end up with a mixture that is approximately 25% ABV (or 50% proof).
Remember to drink responsibly and be aware of the alcohol content in your beverages to avoid overconsumption.