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

### Instruction:
 Trevor na Joe walikuwa wakifanya kazi pamoja kukamilisha puzzle yenye vipande 500. Walianza kwa kuweka mpaka kwanza ambao ulikuwa na vipande 75. Trevor aliweza kuweka vipande 105 vya puzzle. Joe alikuwa na uwezo wa kuweka vipande mara tatu ya Trevor. Vipande vingapi vya puzzle vimepotea?


### Response:
 Puzzle ina vipande 500 na mpaka ulitumia vipande 75, hivyo kuna vipande 500-75 = <<500-75=425>>425 vilivyobaki.
Trevor aliweka vipande 105 na Joe aliweka vipande mara tatu ya Trevor, hivyo Joe aliweka vipande 3*105 = 315.
Pamoja, Joe na Trevor waliweka vipande 105+315 = <<105+315=420>>420 jumla.
Baada ya kuweka mpaka, vilibaki vipande 425 na waliweka vipande 420, hivyo vipande 425-420 = <<425-420=5>>5 vilipotea.