What percent is one tenth?

1/10=10/100 so it is 10% In general when you make a fraction into something/ 100, then you can change it directly into a percent. So n/100= n percent for any number n. Look at 1/5=2/10=20/100 so it is 20%.
% rate:

= 1/10 * 100%

= 0.10 * 100%

= 10%