Clara is a tour guide who gives several tours over the course of a morning shift and an evening shift. Her morning shift tours are given to groups of 33 people while her evening shift tours are given to groups of 6 people. If the total number of tourists in the morning shift is the same as the total number of tourists in the evening shift, what is the minimum number of tourists that Clara guides in each shift?

Florence tutors students in groups of 18. Meanwhile, Harold tutors students in groups of 13. While discussing their work, the tutors realize that they both work with the same total number of students. What is the smallest number of students each can have?

Anna and her friends made dinner reservations at two local restaurants on two different days. While the first restaurant sat all the friends in groups of 4, the second restaurant sat all the friends in groups of 20. What is the smallest number of people that could be in the group?

At a family reunion, each of Mateo's aunts and uncles is getting photographed once. The aunts are taking pictures in groups of 9 and the uncles are taking pictures in groups of 6. If Mateo has the same total number of aunts and uncles, what is the minimum number of aunts that Mateo must have?

At a family reunion, each of Sadie's aunts and uncles is getting photographed once. The aunts are taking pictures in groups of 10 and the uncles are taking pictures in groups of 5. If Sadie has the same total number of aunts and uncles, what is the minimum number of aunts that Sadie must have?

A small minibus carries 11 passengers and a large minibus carries 18 passengers. If thereare x small minibuses and y large minibuses, how many passengers can be carried in total?