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

### Instruction:
 Cecil ana $600. Catherine ana $250 chini ya mara mbili ya pesa za Cecil wakati Carmela ana $50 zaidi ya mara mbili ya pesa za Cecil. Wana pesa kiasi gani pamoja?


### Response:
 Mara mbili ya pesa za Cecil ni $600 x 2 = $<<600*2=1200>>1200.
Hivyo, Catherine ana $1200 - $250 = $950.
Wakati Carmela ana $1200 + $50 = $<<1200+50=1250>>1250.
Hivyo, wana jumla ya $600 + $950 + $1250 = $<<600+950+1250=2800>>2800.