Question 90
On a mysterious island were 13 gray chameleons, 15 brown chameleons and 17 red chameleons. When two chameleons of different colors meet, the two take the third color. For example, if a gray meets a red, then the two turn brown. Because of a storm, there were 2 gray-red encounters, 3 brown-red encounters and 1 gray-red date, how many chameleons of each color were on the island?