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

### Instruction:
Two days ago, Uncle Welly planted 50 roses on his vacant lot. Yesterday, he planted 20 more roses than the previous day. Today, he planted twice the number of roses than two days ago. How many roses did Uncle Welly plant in his vacant lot?

### Response:
 Uncle Welly alipanda maua 50 siku mbili zilizopita.
Uncle Welly alipanda maua 20 zaidi ya siku iliyotangulia.
Hii inamaanisha kuwa Uncle Welly alipanda maua 20 jana.
Hivyo, Uncle Welly alipanda maua 50 + 20 = <<50+20=70>>70 jumla.
Leo, Uncle Welly alipanda maua mara mbili ya maua ya siku mbili zilizopita.
Hii inamaanisha kuwa Uncle Welly alipanda maua 100 leo.
Hivyo, Uncle Welly alipanda maua 100 + 70 = <<100+70=170>>170 jumla.