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

### Instruction:
Edith is a receptionist at a local office and is organizing files into cabinets. She had 60 files and finished organizing half of them this morning. She has another 15 files to organize in the afternoon and the rest of the files are missing. How many files are missing?

### Response:
 Edith tayari amepanga faili 60 / 2 = <<60/2=30>>30 asubuhi.
Ana faili zilizobaki za kupanga, hivyo bado ana faili 30 + 15 = <<30+15=45>>45 ofisini.
Hii inamaanisha kuna jumla ya faili 60 - 45 faili zilizopangwa = <<60-45=15>>15 faili zilizopotea.