First you have to know how many minutes are in 720 seconds. A minute is 60 seconds, so you can divide 720 by 60 and get 12 minutes. Then, since there are 60 minutes in an hour, you divide 12 by 60 which gets you two-tenths of an hour, or .2 of an hour, or 20% of an hour.
This conversion<span> of </span>720 seconds<span> to </span>hours<span> has been calculated by multiplying </span>720 seconds<span> by 0.0002 and the result is 0.2 </span>hours<span>.</span>
