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

### Instruction:
 Reyna alikuwa na taa 20 zenye taa 7 kila moja. Ikiwa 1/4 yao ina taa 2 zilizozimika kila moja, taa ngapi zinafanya kazi?


### Response:
 Jumla ya taa katika taa 20 ni 20*7 = <<20*7=140>>140
Ikiwa ¼ ya taa 20 zina taa zilizozimika, kuna ¼*20 = 5 taa zilizozimika
Kwa kuwa kila moja ya taa 5 zina taa 2 zilizozimika, idadi ya taa zilizozimika ni 5*2 = <<5*2=10>>10 taa
Idadi ya taa zinazofanya kazi ni 140 -10 = <<140-10=130>>130 taa