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

### Instruction:
In my school, the number of students has increased by 20% this year. The number of students this year is 960. How many students were there last year?

### Response:
 Acha X iwe idadi ya wanafunzi mwaka jana. Idadi ya wanafunzi mwaka huu ni X+X*20% = 960
Kwa kuunganisha vipengele sawa, tunapata X*1.2 = 960
Kwa kugawanya pande zote na 1.2, tunapata X = 800 wanafunzi.