The question does not say decrease from what.
45 x 8 = 360 minutes = 6 hours
7:45
7 hours 45 minutes.
7:45
8 hours 23 minutes - 2 hour 45 minutes = 5 hours 38 minutes.
45 minutes is 3/4 of an hour....and would be 3/32 of 8 hours
45
It would be 8:30.
Divide 45 by 8 to find out.45/8 = 5 5/8 or 5.625
7:45
45 minutes to 2 hours is the same as 45 minutes to 120 minutes. This can be reduced to 9/24, or 9 to 24.
4:52. 53 minus 45 = 8, so we need to go to 8 minutes before 5.