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

### Instruction:
Aida has twice as many dolls as Sophie, and Sophie has twice as many dolls as Vera. How many dolls do Aida, Sophie, and Vera have combined if Vera has 20 dolls?

### Response:
 Ikiwa Sophie ana mara mbili ya vile Vera anavyo, basi ana vipu 2 * 20 = <<2*20=40>>40.
Jumla ya vipu vya Sophie na Vera ni vipu 40 + 20 = <<40+20=60>>60.
Aida ana vipu mara mbili ya vile Sophie anavyo, hivyo ana vipu 2 * 40 = <<2*40=80>>80.
Jumla ya vipu vyote watatu ni vipu 80 + 60 = <<80+60=140>>140.