Students
in an 11^{th} grade history class are randomly divided into three teams
of five students for a history trivia contest. Each student takes a trivia test
with 100 total points and their scores are posted below. The team with the
highest average score (rounded to the nearest whole number) wins the contest.

Which
of the following percents is closest to the percent of trivia test scores that
are at or above 80 points?