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

### Instruction:
The sum of Cooper’s, Dante’s, and Maria’s ages is 31. Dante is twice as old as Cooper. Maria is one year older than Dante. How old is Cooper?

### Response:
 Hebu X = umri wa Cooper
Dante = 2X
Maria = 2X + 1
X + 2X + 2X + 1 = 31
5X + 1 = 31
5X = 30
X = 6
Cooper ana umri wa miaka 6.