Question

8. Two alarms ring simultaneously

Answer 1

They will meet for a third time at 6am because 20 is one third of 60. So when the first alarm rings three times the second one will also ring. Then since the question is asking when the alarms ring for the third time together you ha e to add three hours to 3am because they always meet on the hour. Hope this helps!

Answer 2

3:20 then 3:40 then 4:00 for both