Brian and Charles had some stickers. At first, the number of stickers Brian had was 4/7 of the total number of stickers. Then, Brian sold 3/8 of his stickers. Find the ratio of the number of stickers Brian had at the end to the number of stickers Charles had at the end.
b/c = 4/3
(5/8 b)/c = 5/8 (b/c) = 5/8 * 4/3 = 5/6