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

### Instruction:
A café has a few orders to cook and also needs to makes sandwiches for a group of customers that arrived. 3 local offices have each ordered 10 bacon sandwiches and half of the group that has arrived have asked for 4 bacon sandwiches each. If the café makes a total of 54 bacon sandwiches, how many customers are in the group of customers that arrived?

### Response:
 Ofisi 3 zimeagiza sandwichi 10 za bacon kila moja, hivyo jumla ni 3 x 10 = <<3*10=30>>30 sandwichi.
Kikundi cha wateja kilichofika kimeagiza sandwichi 4 kila mmoja, lakini nusu yao tu.
Hivyo, idadi ya wateja ambao wameagiza sandwichi 4 kila mmoja ni 54 - 30 = <<54-30=24>>24.
Idadi ya wateja katika kikundi kilichofika ni 24 / 2 = <<24/2=12>>12.