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

### Instruction:
 Jude alinunua viti vitatu kwa nyumba yake, vyote kwa bei ile ile. Pia alinunua meza ambayo inagharimu $50 na seti mbili za sahani kwa $20 kwa kila seti. Baada ya kumpa mfanyabiashara $130, Jude alipata pesa ya kubadilisha $4. Kila kiti kiligharimu kiasi gani?


### Response:
 Seti mbili za sahani zinagharimu $20 x 2 = $<<20*2=40>>40.
Hivyo meza na seti mbili za sahani zinagharimu $50 + $40 = $<<50+40=90>>90 jumla.
Kwa kuwa Jude alipokea pesa ya kubadilisha $4, basi alilipa jumla ya $130 - $4 = $<<130-4=126>>126 kwa viti, meza, na sahani.
Hivyo, viti vitatu viligharimu $126 - $90 = $36.
Hivyo, kila kiti kiligharimu $36/3 = $<<36/3=12>>12.