Percentage of someones life ive known them for

Question

my friend is 7858 days old

I’ve known them for 513 days of their life

what is the percentage of their life I’ve known them for

Answer 1

The easiest way to do percents is to always divide. You will always have your part over your whole. In this situation 7858 is our 100% therefore it will be in the denominator and the 513 will be in our numerator, which will be the part of the percentage of how long you've known your friend during his life. 513/7858 = .0653 (Rounded to the nearest ten-thousandths). In order to convert a decimal to a percent you have to move the decimal two places to the right and to change a percent to a decimal you do the opposite which is two places to the left. If we move our decimal two places to the right it will be 6.53% which will be the percentage of their life that you have known them.

Feel free to message me if you have any questions.