Answer:
23
Step-by-step explanation:
The 12 hour clock doesn't go past 12 on the first 2 digits (hour).
The 24 hours goes 13:, 14:, 15: and so on.
We now have to figure out "4" largest numbers on the 12-hr clock and add them to get the max sum out of them.
The hours are:
00
01
02
...
09
10
11
12
The largest sum would be that of "09"
Now, the minutes:
59 is the highest minute and that will give us the highest sum
So, the time we are looking for is:
09:59
The sum is:
0 + 9 + 5 + 9 = 23
