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

### Instruction:
 Mia ana makombe mara 4 ya makombe ya David. Ava ana makombe 20 zaidi ya Mia. Alice ana nusu ya idadi ya makombe Ava ana. Ikiwa David ana makombe 15, idadi jumla ya makombe ya konokono wote ni ngapi?


### Response:
 Ikiwa David ana makombe 15, na Mia ana makombe mara 4 ya makombe ya David, basi Mia ana makombe 15*4 = <<15*4=60>>60.
Ava ana makombe 20 zaidi ya Mia, hivyo ana makombe 60+20 = 80.
Alice ana nusu ya idadi ya makombe Ava ana, hivyo ana makombe 1/2*80 = 40.
Kwa pamoja, wote wana makombe 15+60+80+40 = <<15+60+80+40=195>>195.