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

### Instruction:
John has just turned 39.  3 years ago, he was twice as old as James will be in 6 years.  If James' older brother is 4 years older than James, how old is James' older brother?

### Response:
 Miaka 3 iliyopita, John alikuwa mara mbili ya umri wa James atakavyokuwa baada ya miaka 6.
Kwa hivyo, miaka 3 iliyopita, John alikuwa na umri wa miaka 36 na James alikuwa na umri wa miaka 18.
Kaka mkubwa wa James ni miaka 4 zaidi ya James, kwa hivyo kaka mkubwa wa James ana umri wa miaka 18 + 4 = <<18+4=22>>22.