Question 18
On a school trip, we took 6 tents for 18 students. Each tent sleeps either two or four students. How many of the tents were for two students?
**Qualification:** The checked intended answer assumes exactly 18 sleeping places, with no spare capacity. This is not explicit in the source; the solution explains the other possibilities if spare places are allowed.
**Qualification:** The checked intended answer assumes exactly 18 sleeping places, with no spare capacity. This is not explicit in the source; the solution explains the other possibilities if spare places are allowed.