document.write( "Question 1184017: Boris and Michael are jogging around a lake. It takes Boris 6 minutes to complete a lap and
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\n" ); document.write( "and Michael for two minutes. Then they continue jogging. If they started jogging together,
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Algebra.Com's Answer #814576 by ikleyn(52875)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "Boris and Michael are jogging around a lake. It takes Boris 6 minutes to complete a lap and
\n" ); document.write( "Michael takes 8 minutes. After completing each lap, the boys take a rest, Boris for one minute
\n" ); document.write( "and Michael for two minutes. Then they continue jogging. If they started jogging together,
\n" ); document.write( "how long, in minutes, does it take until they are next together?
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\n" ); document.write( "\n" ); document.write( "            This problem is non-standard Travel and Distance problem.\r
\n" ); document.write( "\n" ); document.write( "            The first move/thought is to analyse it as @ankor@dixie-net.com did in his post.\r
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\n" ); document.write( "\n" ); document.write( "            But the normal state of a person who solves it for the first time, is DO NOT BELIEVE and TO CHECK himself (or herself).\r
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\n" ); document.write( "\n" ); document.write( "            THEREFORE, I decided to make such a check. My solution is below. Read it attentively.\r
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document.write( "Let make timing Table, showing time/times, when the persons, Boris and Michael, are in the starting point again,\r\n" );
document.write( "while they make their trips around the lake. In the Table, I placed timing, when they achieve this starting point and rest there.\r\n" );
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document.write( "                T     A     B     L     E    \r\n" );
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document.write( "         # of lap           1       2       3       4       5       6       7       8        9       10\r\n" );
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document.write( "        Boris' time        6-7    13-14   20-21   27-28   34-35   41-42   48-49   55-56    62-63    69-70\r\n" );
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document.write( "        Michael's time     8-10   18-20   28-30   38-40   48-50   58-60   68-70 \r\n" );
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document.write( "         # of lap           1       2       3       4       5       6       7\r\n" );
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document.write( "We look to find non-zero intersection between the given time intervals, when they rest.\r\n" );
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document.write( "Such non-zero / (non-empty) intersection is time period from 48 to 49 minutes, when Boris completed his 7-th  lap\r\n" );
document.write( "and Michael completed his 5-th lap.\r\n" );
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document.write( "ANSWER. First time they are next together is 48 minutes after start.\r\n" );
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\n" ); document.write( "\n" ); document.write( "At   t = 28 minutes,  they   \" are together \"  during the time interval which lasts  0 minutes and  0  seconds \r
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\n" ); document.write( "\n" ); document.write( "So,  according to the context  (and common sense),  I do not consider this time moment as if  \" they are together \".\r
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