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

### Instruction:
In a house of 15, 3/5 of the people eat pizza. If Aviana brought pizza with 50 pieces, and each person eating pizza took 4 pieces, calculate the number of pizza pieces that remained.

### Response:
 Ikiwa kuna watu 15 katika nyumba, idadi ya watu wanaokula pizza ni 3/5*15 = <<3/5*15=9>>9 watu.
Ikiwa kila mwanakaya anayekula pizza alikula vipande vinne, idadi ya vipande vilivyokuliwa ni 4*9 = <<4*9=36>>36 vipande.
Kwa kuwa jumla ya vipande vilikuwa 50, idadi ya vipande vilivyosalia ni 50-36 = <<50-36=14>>14 vipande.