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

### Instruction:
 Eneo la mashariki ya tambarare A ni maili za mraba 50 chini ya eneo la mashariki ya tambarare B. Ikiwa tambarare B ina maili za mraba 200, eneo la tambarare zote ni kiasi gani?


### Response:
 Eneo la tambarare A lina jumla ya maili za mraba 200 - 50 = 150.
Jumla ya maili za mraba kwa tambarare zote ni 150 maili za mraba kwa tambarare A + 200 maili za mraba kwa tambarare B = <<150+200=350>>350 maili za mraba.