Let's sum these two numbers.
5 + 15 = 20 total hours.
In every 12-hour the clock format changes AM to PM or the opposite PM to AM. So we need to divide 12 with the result 20.
There are 1 times 12 number in the 20
If the result is ODD number the time format will change the opposite side. If the result is EVEN number the time format will be the same.
Answer :8pm
What is 15 hours from 5am ? = 8pm.
Add 15 hours to 5am is equal 8pm.