Answer:
7 hours (if the question asked us how many hours he spent without adding the value of the minutes).
Explanation:
From 7 a.m. to 2 pm its 7 hours.
The remainder is 45 minutes.
7 hours + 45 minutes.
If it's in hours it'll be 7 hours. If the question asked hours and minutes it would be 7 hours and 45 minutes.
