how do i write 0.25 as a fraction in its simplists form

The question is asking to state and calculate or convert the said decimal value into a simplest fraction form, and base on my calculation and further research about the said question, I would say that the answer would be 1/4. 
I hope you are satisfied with my answer and feel free to ask for more  

3you can not round up to four, as there was not a full payment for the fourth night, so uou would round down to 3