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

### Instruction:
 Bi. Lacson alivuna viazi vitamu 80. Aliuza 20 kwa Bi. Adams na 15 kwa Bw. Lenon. Viazi vitamu vingapi bado havijauzwa?


### Response:
 Bi. Lacson aliuza jumla ya viazi vitamu 20 + 15 = <<20+15=35>>35.
Hivyo, bado kuna viazi vitamu 80 - 35 = <<80-35=45>>45 ambavyo havijauzwa.