Help on Approximate Time Spent

<p>I participated in an activity a little 11th grade, a bunch over the summer of 11th grade, and some during senior year. All told, the time commitment was ~400 hours. Right now I have 11th and 12th grade check boxes selected as well as that I participated during the school year and summer. Now, for approximate time spent I said 20 hours a week for 20 weeks/yr. Is this correct, or would it lend schools to believe I mean I spent 800 rather than 400 hours because I selected doing the activity for two years? </p>

<p>I just want to make sure I don't vastly misrepresent the time I spent on an activity to colleges. Thanks!</p>