3. What time does a 12-hour clock read 40 hours before it reads 12:00 and 80 hours after it reads 11:00?

Question

What time does a 12-hour clock read 40 hours before it reads 12:00 and 80 hours after it reads 11:00?

Answer 1

40 hours before 12 noon:

40 mod 24 = 16 so 16 hours before 12 noon is 4 hours before 12 midnight so 8 pm,,,,

check: starts at 8 pm......

1 whole day later = 24 hours, is STILL 8 pm,...

12 hours after that........... 8 am...

4 hours more............. 12 noon...

right on the money!!! Answer is 8 pm is the answer, proven to be correct

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80 hours after 11 am....

80 mod 24 = 8 hours <--- 3 days and 8 hours

so 8 hours after 11 am is 7 pm.