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

### Instruction:
 Sehemu mbili kati ya tano za viti katika ukumbi wa mihadhara unaokaa watu 500 zimechukuliwa kwa sasa. Ilibainika kuwa 1/10 ya viti vimevunjika. Kuna viti vingapi bado vipo?


### Response:
 Sehemu mbili kati ya tano za viti tayari zimechukuliwa, ambayo inamaanisha watu 2/5*500 = <<2/5*500=200>>200 tayari wameketi.
1/10 ya viti vimevunjika, ambayo inamaanisha 1/10*500 = <<1/10*500=50>>50 viti vimevunjika.
Idadi ya viti ambavyo vimevunjika au tayari vimechukuliwa ni 50+200 = <<50+200=250>>250.
Ikiwa ukumbi ungekuwa umesheheni, hii ingemaanisha viti vyote 500 vimevunjika au vimechukuliwa, hivyo kutakuwa na watu 250 na viti 250 kati ya 500 = 250/500 = 1/2 ya viti vimevunjika au vimechukuliwa.
Idadi ya viti ambavyo bado vipo ni 500-250 = <<500-250=250>>250.