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

### Instruction:
There are 40 students in the 6th  grade.  25% of them wear glasses and 40% of them wear contact lenses.  How many students do not wear any vision assistance wear?

### Response:
 Watu wanaovaa miwani: 40(.25)=10
Watu wanaovaa lenzi za mawasiliano: 40(.40)=16
Watu wanaovaa yoyote kati yao: 10+16=<<10+16=26>>26
Watu ambao hawavai chochote: 40-26=<<40-26=14>>14