Darnell run several sprints for track. this past season, he ran a total of 60 races. if he placed first six times, second placed 11 times, and places third 19 times, what was the percentage of races that Durnell did not place first , second, or third ?

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.