KöMaL 2018 K591

A group of children participated in a bus excursion. In the luggage compartment of the bus, there is room for the luggage of one third of the children. The bus has 52 seats. The teachers are sitting on two seats. On each of the remaining seats, there is either a child sitting, or there is the luggage of a child. How many children are there on the trip if all seats are used?