Multiple Table Queries Montgomery Adventures Sub Queries: IN 1. What are the first and last names of customers who spent more than $50/person on a trip? 2. What is the first and last name of the guide who heads up the most trips? 3. For which trip dates does Karen Busan have reservations for? 4. Which guide has the greatest number of persons taking their trips? 5. How many persons are going on a Hiking trip? 6. How.