Final answer:
Recess lasted for 45 minutes, which is the time from when it began at 12:25 pm until it ended at 1:10 pm after lunch.
Step-by-step explanation:
To find out how long recess was, we need to subtract the time when recess began from the time when it ended. Recess began after lunch at 12:25 pm and ended at 1:10 pm.
We calculate the duration of recess as follows:
- Start by recognizing that the time from 12:25 pm to 1:00 pm is 35 minutes.
- Then, add the time from 1:00 pm until recess ended at 1:10 pm, which is 10 minutes.
- Combine the two durations: 35 minutes + 10 minutes = 45 minutes.
Therefore, the length of recess was 45 minutes, which corresponds to option B.