Acertain triangle has a perimeter of 3065mi the shortest side measure 76mi less than the middle side and the longest side measure 378 mi more than the middle side. find the length of the three sides

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.