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

### Instruction:
 Miaka ishirini iliyopita, Shane alikuwa mara mbili zaidi ya umri wa Garret sasa. Ikiwa Garret ana umri wa miaka 12 sasa, Shane ana umri gani sasa?


### Response:
 Miaka ishirini iliyopita, Shane alikuwa na umri wa 12 * 2 = <<12*2=24>>24.
Shane ana umri wa miaka 24 + 20 = <<24+20=44>>44 sasa.