Christopher, Jameson, and June each bought a toy sword. June's sword is 5 inches longer than Jameson's sword. Jameson's sword is 3 inches longer than twice the length of Christopher's sword. Christopher's sword is 15 inches long. How many inches longer is June's sword than Christopher's sword? Let's think first. Chain of thought:
Twice the length of Christopher's sword is 15 x 2 = 30 inches. So, Jameson's sword is 30 + 3 = 33 inches long. June's sword is 33 + 5 = 38 inches long. Thus, June's sword is 38 - 15 = 23 inches longer than Christopher's sword.
Therefore, the answer is 23.