Final answer:
The question does not provide enough information to determine the footage by which a hose can be shortened during repair.
Step-by-step explanation:
To determine how much a hose can be shortened during repair, we need to consider the given information. Unfortunately, the question does not provide the necessary information for us to determine the footage by which a hose can be shortened. More specific details about the hose length and repair process would be needed to provide a precise answer. If you have any additional information, please let us know so we can assist you further.