Incorrect
Explanation
If 11 o'clock plus 2 hours = 1 o'clock, then 9 o'clock plus 5 hours = 2 o'clock.
Solve this puzzle
There are 5 black cats and 6 white cats. They are all five years old. Each black cat each weighs 12 pounds. Each white cat weighs 15 pounds. How much do they weigh altogether?