What proportion is 13 out of 129?

What proportion is 13 out of 129? In other words, what proportion is 13 out of 129 as a percentage? More specifically, if 13 is the part, and 129 is the whole, what will the part be if the whole is 100?

Below is a more straightforward illustration showing you what we mean when we say we want find the proportion of 13 out of 129 as a percentage:

13 out of 129 = P out of 100

The above problem can be made into an equation and can be solved like this:

P/100 = 13/129
P = 1300/129
P ≈ 10.0775

Now we know that the proportion of 13 out of 129 is the same as 10.0775 out of 100, which means that we have our answer:

What proportion is 13 out of 129? ≈ 10.0775%

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What proportion is 13 out of 130?
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