The difference of 6 hours 45 minutes and 3 hours 15 minutes is approximately what percent of a day?  Choose the correct choice from the following answers.
A) approx 15%  B) approx 16%  C) approx 24%  D) approx 28%  E) approx 72%
Since the question is asking for an approximate percentage   6:45 - 3:15 ~ 3:30 hours   % of day = 3.5*100/24 ~ 15%   approx 15%nswer is approx 15%.
<result>A</result>
The difference of 6 hours 45 minutes and 3 hours 15 minutes is approximately what percent of a day?