document.write( "Question 498322: The display on a digital clock read 6:38. What will the clock display twenty-seven digit changes later?\r
\n" ); document.write( "\n" ); document.write( "I know what the answer is. I made a table and did the number of digit changes at each minute. The answer is 7:01. I am trying to find a pattern so that this could be solved algebraically. Any suggestions? \n" ); document.write( "
Algebra.Com's Answer #337011 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "You couldn't use algebra unless you wanted to find it for x digit changes\r\n" );
document.write( "instead of 27 didgit changes. To use algebra you need an unknown.  But \r\n" );
document.write( "here's how to do it with just basic math:\r\n" );
document.write( "\r\n" );
document.write( "6:38 means \"6%2638%2F60\" hours after 12:00.  Each digit change represents\r\n" );
document.write( "1 munute or \"1%2F60\"th of an hour.  So after 27 digit changes that will be \r\n" );
document.write( "\"27%2F60\" of an hour added to \"6%2638%2F60\",\r\n" );
document.write( "\r\n" );
document.write( "\"6%2638%2F60\"\"%22%22%2B%22%22\"\"27%2F60\"\"%22%22=%22%22\"\"6%2665%2F60\"\"%22%22=%22%22\"\"7%265%2F60\" \r\n" );
document.write( "hours after 12:00 and since each minute is \"1%2F60\"th of an hour\r\n" );
document.write( "that will be at 7:05, not 7:01.  It really is 7:05, not 7:01. Here is how my\r\n" );
document.write( "computer program gave it: \r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "1 digit change later the clock will read 6:39\r\n" );
document.write( "2 digit changes later the clock will read 6:40\r\n" );
document.write( "3 digit changes later the clock will read 6:41\r\n" );
document.write( "4 digit changes later the clock will read 6:42\r\n" );
document.write( "5 digit changes later the clock will read 6:43\r\n" );
document.write( "6 digit changes later the clock will read 6:44\r\n" );
document.write( "7 digit changes later the clock will read 6:45\r\n" );
document.write( "8 digit changes later the clock will read 6:46\r\n" );
document.write( "9 digit changes later the clock will read 6:47\r\n" );
document.write( "10 digit changes later the clock will read 6:48\r\n" );
document.write( "11 digit changes later the clock will read 6:49\r\n" );
document.write( "12 digit changes later the clock will read 6:50\r\n" );
document.write( "13 digit changes later the clock will read 6:51\r\n" );
document.write( "14 digit changes later the clock will read 6:52\r\n" );
document.write( "15 digit changes later the clock will read 6:53\r\n" );
document.write( "16 digit changes later the clock will read 6:54\r\n" );
document.write( "17 digit changes later the clock will read 6:55\r\n" );
document.write( "18 digit changes later the clock will read 6:56\r\n" );
document.write( "19 digit changes later the clock will read 6:57\r\n" );
document.write( "20 digit changes later the clock will read 6:58\r\n" );
document.write( "21 digit changes later the clock will read 6:59\r\n" );
document.write( "22 digit changes later the clock will read 7:00\r\n" );
document.write( "23 digit changes later the clock will read 7:01\r\n" );
document.write( "24 digit changes later the clock will read 7:02\r\n" );
document.write( "25 digit changes later the clock will read 7:03\r\n" );
document.write( "26 digit changes later the clock will read 7:04\r\n" );
document.write( "27 digit changes later the clock will read 7:05\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" ); document.write( "
\n" );