Explanation: We are given that: Students in the class can either speak French, German or both 15 students know French 17 students know German
Now, the maximum number in the class can be calculated by assuming that no student can speak both languages. This means that the number of students will be the summation of those who know French only (15) and those who know German only (17)
In this case: the maximum number of students = 15 + 17 = 32 students