This is a perfect time to learn about the 24 hour clock. To convert pm times to 24 hour clock times you simply add 12 to it. So your question now looks like
5am to 15:30pm. Subtract 5 from 15 to get the total number of HOURS(not including the 30 minutes). [tex]15-5 = 10[/tex] hours. We also have to add on the half hour left over. So we end up with 10 and a half hours as the answer.
