Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
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?

### Response:
 Katika darasa A, kuna 40/100 * 80 = <<40/100*80=32>>32 wanafunzi.
Katika darasa B, idadi ya wanafunzi ni ndogo kwa 21, ambayo inamaanisha darasa B lina wanafunzi 32 - 21 = <<32-21=11>>11.
Hiyo inamaanisha wanafunzi 80 - 32 - 11 = <<80-32-11=37>>37 wako darasa C.