Number form in some instances depends upon the answer to the question "How verbatim do you want to be?"
If the witness says "...a hundred fifteen...," whether you put the number into words or figures depends upon what you are going to do with "a" hundred.
If the witness says "...three and three quarters...," whether you put the number into words or figures depends upon what you are going to do with a "quarter."
In these two instances, "a" and "quarter" are not really numbers. My recommendation is some sort of consistency of style or approach to this problem, or maybe it depends on the other numbers or lack of same in the sentence.
The decision is yours.
Happy punctuating!
Margie