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

### Instruction:
Aria has twice as many high school credits as Emily, who has twice the number of high school credits as Spencer. If Emily has 20 credits, what's twice the total number of high school credits the three have?

### Response:
 Emily ana mikopo 20. Spencer ana 20/2=<<20/2=10>>10 mikopo. Aria ana mikopo 20 x 2 = <<20*2=40>>40. Jumla ya mikopo ya shule ya upili ya watatu ni 20 + 10 + 40 = <<20+10+40=70>>70 mikopo. Mara mbili ya idadi ya jumla ya mikopo ni 2 x 70 = <<2*70=140>>140 mikopo.