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

### Instruction:
 Baada ya miaka minne, Suzy atakuwa mara mbili ya umri wa Mary wakati huo. Ikiwa Suzy ana miaka 20 sasa, Mary ana miaka mingapi?


### Response:
 Baada ya miaka minne, Suzy atakuwa na umri wa 20+4=<<20+4=24>>24.
Kisha Mary atakuwa na umri wa 24/2=<<24/2=12>>12.
Kwa hiyo, Mary ana umri wa 12-4=<<12-4=8>>8 sasa.