2:1

2:1 is a two-to-one ratio. Here’s the quick stuff:

• Meaning: for every 2 units of the first thing, there is 1 unit of the second.
• Fractions (of the whole): first part = 2/(2+1) = 2/3, second part = 1/3.
• Decimals: 2/3 ≈ 0.6667, 1/3 ≈ 0.3333.
• Percentages: 66.67% of the first, 33.33% of the second.
• If you know the total amount T, the amounts are: first = (2/3)T, second = (1/3)T.
• Scaling: 2:1 scales to 4:2, 6:3, etc. (still a 2:1 ratio after simplification).
• Quick example: with total 300 units, you’d have 200 of the first and 100 of the second.

What would you like to do with 2:1? Is there a total amount or a specific problem you want to solve?