From 9:45 AM to 5 PM OR 9:45 PM to 5 AM... the answer is 7 hours and 15 minutes !
945/5=189
7.75 hours
945 pm to midnight is 2 hours, 15 minutes. Midnight to 830 am is 8 hours, 30 minutes. The total is 10 hours, 45 minutes.
From 9:45am to 6:30pm is 8 hours and 45 minutes
8.5 + 24k hours where k is any integer.
5 times 189 equals 945. You can tell 945 is composite because it ends in a 5. That means if you keep counting by 5's and you count 5 189 times, you should get 945!
189
3 x 3 x 3 x 5 x 7 = 945 33 x 5 x 7 = 945
3 x 3 x 3 x 5 x 7 = 945
945 = 33 x 5 x 7
907 + 31 + 5 + 2 = 945
1 hour 55 minutes between 9:45am and 11:40am