Question

What does a $2:1$ratio mean?

Answer 1

Explanation about $2:1$ ratio.

Ratios are used to compare two or more quantities and determine the relationship among two or more quantities.

The two or more numbers in a ratio are compared if they have the same units.

The ratio between two quantities $a$ and $b$ is represented as $a:b$

Now, the ratio $2:1$means that the two quantities of the same units are compared in the form of $2$ and $1$ where the quantity equivalent to $2$ is double the quantity equivalent to $1$.

For example: Ratio of $8\mathrm{jeans}$ to $4\mathrm{shirts}$ is $8:4=2:1$

Ratio of $10\mathrm{notebooks}$ to $5\mathrm{books}$ is $10:5=2:1$

Thus, the ratio $2:1$means that the two quantities of the same units are compared in the form of $2$ and $1$ where the quantity equivalent to $2$ is double of the quantity equivalent to $1$.