text: i know the answer, but do you? analog clock  when i arrived at work yesterday morning, i noticed that it was two and a half hours later than when i left home. knowing that my trip to work always takes exactly twenty minutes, i realized that i must have looked at the clock in the mirror before i left.  how many minutes before noon did i leave?   what i'm looking for is not only the answer but an explanation of how the answer was reached. whoever can answer correctly will earn twelve points (two for answering and ten for best answer). if you don't know, at least you've earned two points :) you thought you left at 10:55 am, 65 minutes before noon. the clock actually read 1:05 pm, so 20 minutes later you reached work at 1:25 pm, seemingly 2 and a half hours later.  edit: ok, i made a mistake, it could be 65 mins either side of 12 o'clock or 6 o'clock. but as you arrived in the morning it could only be 7:05 am reflected to 4:55 am so you arrive at 7:25 am making the answer 295 mins.  or 1:05 am reflected to 10:55 pm so you arrive at 1:25 am (less likely working hours) would make the answer 655 mins before noon.