Well from what I've searched, I think that the canned Mountain Dew is a better deal than the liter Mountain Dew. I used the "percent of changes" method to solve this.
In my search, the canned Mountain Dews were worth $15.99, while a liter Mountain Dew is worth $21.99. First , all I did was decide if it was a decrease or an increase, and in this situation, it is a decrease. Next you have to subtract $21.99 - $15.99, which equals $6.00. Then you have to create a ratio from the difference and the original amount, which is the bigger number. so the ratio would be $6.00/$21.00. Then you divide $6.00 by $21.00 to find the percent. When you find the answer, if it's reaches over 3 decimals, then stop at the third decimal (Example: .789). Then you have to skip two numbers to make it a percent (Example; 78.9). After that, you should round to the nearest whole number, which makes it an official percent, or you can just leave it as it is so it can be an extended percent.
There are also many non-mathematical reasons why you should prefer canned Mountain Dews over a liter Mountain Dew, but thinking mathematically could help a lot too.
In my search, the canned Mountain Dews were worth $15.99, while a liter Mountain Dew is worth $21.99. First , all I did was decide if it was a decrease or an increase, and in this situation, it is a decrease. Next you have to subtract $21.99 - $15.99, which equals $6.00. Then you have to create a ratio from the difference and the original amount, which is the bigger number. so the ratio would be $6.00/$21.00. Then you divide $6.00 by $21.00 to find the percent. When you find the answer, if it's reaches over 3 decimals, then stop at the third decimal (Example: .789). Then you have to skip two numbers to make it a percent (Example; 78.9). After that, you should round to the nearest whole number, which makes it an official percent, or you can just leave it as it is so it can be an extended percent.
There are also many non-mathematical reasons why you should prefer canned Mountain Dews over a liter Mountain Dew, but thinking mathematically could help a lot too.
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