Answer:
10:30am
Step-by-step explanation:
total lesson time is 1 hr and 15 min (10 to 11:15).
lesson time is 1 hr total and the break mid way is :15 long.
the lesson before the break is from 10-10:30 (:30 length)
break is at 10:30 (:15 long concluding at 10:45).
lesson resumes at 10:45 when break is over
the lesson runs another :30 until 11:15 (10:45-11:15)
halfway thru the lesson is 10:30am for the break to start
