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

### Instruction:
A certain tree was 100 meters tall at the end of 2017. It will grow 10% more than its previous height each year. How long has the tree grown from 2017 until the end of 2019?

### Response:
 Urefu wa mti mwishoni mwa 2018 ulikuwa mita 100 x 110/100 = <<100*110/100=110>>110.
Urefu wa mti mwishoni mwa 2019 ulikuwa mita 110 x 110/100 = <<110*110/100=121>>121.
Hivyo, mti umekua kwa mita 121 - 100 = <<121-100=21>>21.