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

### Instruction:
Johannes owns a vegetable shop, he sells cabbage for $2 per kilogram. If Johannes was able to earn $30 last Wednesday, $24 last Friday, and $42 today, how many kilograms of cabbage was he able to sell?

### Response:
 Jumatano iliyopita, Johannes aliuza kilogramu $30 / $2 = <<30/2=15>>15 za kabichi.
Ijumaa iliyopita, Johannes aliuza kilogramu $24 / $2 = <<24/2=12>>12 za kabichi.
Na leo, Johannes aliuza kilogramu $42 / $2 = <<42/2=21>>21 za kabichi.
Kwa hiyo, Johannes aliuza jumla ya kilogramu 15 + 12 + 21 = <<15+12+21=48>>48 za kabichi.