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March 24th, 2012, 09:22 AM  #1 
Newbie Joined: Mar 2009 Posts: 13 Thanks: 0  General Math Question
Hi Guys, I simply wanted to ask, I have a large file that I want to download the size of 4,375,272 at the speed of 160kb/sec. How can i find out how long it will take in HH:MM:SS? I have tried the following: $a = 4,375,272 $b = 160kb/sec $totalsecs = $a * $b = 700043520 $totalmins =$totalsecs / 60 = 11667392 ... not sure where to go from here? Can somebody help me find a way for me to find out how long it will tak to download? 
March 24th, 2012, 10:43 AM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 521 Math Focus: Calculus/ODEs  Re: General Math Question
Let t be the download time. Assuming the file size is in bytes: 
March 24th, 2012, 10:51 AM  #3 
Newbie Joined: Mar 2009 Posts: 13 Thanks: 0  Re: General Math Question
Can you explain your method?

March 24th, 2012, 12:37 PM  #4 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 521 Math Focus: Calculus/ODEs  Re: General Math Question
total bytes = (bytes per time)(total time) thus: total time = (total bytes)/(bytes per time) It is mathematically equivalent to asking how long will it take to travel a certain distance at a certain speed: time = distance/speed 

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