The second angle of a triangle is three times as large as the first. the third angle is 30 degrees more than the first. find the measure of each angle. ( include solution, you very much)

This size running track is usually called a 400 meter track. however if a person ran as close to the inside as possible on the track they would run less than 400 meters in one lap. how far away from the inside border would someone have to run to make one lap equal exactly 400 meters