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

### Instruction:
Gretchen's local ice cream shop offers 100 different flavors.  She was able to try a 1/4 of the flavors 2 years ago and double that amount last year.  How many more flavors will she need to try this year to have tried all 100 flavors?

### Response:
 Miaka 2 iliyopita alijaribu 1/4*100 = <<1/4*100=25>>25 ladha.
Mwaka jana alijaribu 25*2 = <<25*2=50>>50 ladha.
Mwaka huu anahitaji kujaribu 100-25-50 = <<100-25-50=25>>25 ladha.