This is a math problem. The answer is that Mr. Qiao can take 38 yuan on the Ferris wheel seven times at most. This is a mathematical application problem, which examines the algorithm of division. The Ferris wheel rides in 5 yuan once, and Mr. Joe has 38. As long as you divide 38 by 5, it is equal to more than 7, so the Ferris wheel can sit up to 7 times. Another thing to note: Mr. Joe can take the Ferris wheel 38 yuan up to 7 times.

Math application problem solving skills: first glance at the topic to understand the content, and then read it carefully, paying attention to details, numbers and so on. If you still don't understand, you can read it several times until you understand it, at least three times. In addition, remember some calculation formulas to facilitate answering questions.