###Human: Adam goes to a small school, which teaches 80 students in three classes. 40% of the students are in class A, and class B has 21 students fewer than class A. The rest are in class C. How many students are in this class?, ### Assistant: In class A, there are 40/100 * 80 = 32 students.
In class B, the number of students is less by 21, which means class B has 32 - 21 = 11 students.
That means 80 - 32 - 11 = 37 students are in class C. 
 So the answer is :  37