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

### Instruction:
 Mara mbili ya umri wa Angie, pamoja na 4, ni 20. Angie ana umri gani?


### Response:
 Mara mbili ya umri wa Angie ni 20-4=<<20-4=16>>16.
Angie ana umri wa 16/2=<<16/2=8>>8.