On Fri, Jan 31, 2014 at 4:12 PM, <scottw...@gmail.com> wrote: > **If I leave my house at 6:52 am and run 1 mile at an easy pace (8:15 per > mile), then 3 miles at tempo (7:12 per mile) and 1 mile at easy pace again, > what time do I get home for breakfast?** > > > > seconds = 1 > hours = seconds / (60*60) > seconds = seconds - hours*60*60 > minutes = seconds / 60 > seconds = seconds - minutes *60 > > time_left_house = 6 * hours + 52 * minutes > > miles_run_easy_pace = 2 * (8 * minutes + 15 * seconds) > > miles_run_fast_pace = 3 * (7 * minutes + 12 * seconds) > > > total_time_run = miles_run_easy_pace + miles_run_fast_pace + > time_left_house
Thanks for being up-front about it being homework. I'll give you one broad hint, and see if you can figure it out from there. Your beginning work is not actually achieving anything useful. To make your next steps work, what you actually want is two very simple assignments that will mean that "6 * hours" comes out as the number of seconds in six hours. Then, when you've added all the different pieces together, you'll have a final time that's measured in seconds - and since that final time includes the time_left_house, it's actually going to be the number of seconds since midnight. This is actually an excellent way to represent time (number of seconds since some "beginning point" aka epoch). There's then just one last step: Convert it into hours, minutes, and seconds, for display. You have most of the code for doing that. So, work on this in two parts. In the first part, make your program calculate how many seconds after midnight you'll get home. (The correct answer there is 27006, according to my calculations. Of course, you need to have a program that produces the correct answer, not just the answer.) Then work out how to make that display as hh:mm:ss. I think you can probably get it from there - you're already a lot of the way toward it. But if not, you know where to find us :) ChrisA -- https://mail.python.org/mailman/listinfo/python-list
