Let x be the time for Canadian Goose (CG), in hours. Then the time for the Great Blue Heron (GBH) is (14 - x) hours. The distance equation is 20*x + 10*(14-x) = 180. Simplify and solve for x: 20x + 140 - 10x = 180, 20x - 10x = 180 - 140, 10x = 40, x == 4. Answer. GC time is 4 hours. GBH time is 14-4 = 10 hours.