document.write( "Question 1163722: Bob and Moe set off at the same time on a 30 km walk for charity. Bob walks 1.4 km/h faster than Moe, but stops for 20 min on route. Even with the delay, Bob finishes 2 hours ahead of Moe. How fast in km/h was Bob walking, and how long in hours did it take for Moe to finish the walk? \n" ); document.write( "
Algebra.Com's Answer #787899 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
Bob and Moe set off at the same time on a 30 km walk for charity.
\n" ); document.write( "Bob walks 1.4 km/h faster than Moe,
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document.write( "Let Moe's rate be r\r\n" );
document.write( "Then Bob's rate is r+1.4\r\n" );
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document.write( "Make this chart:\r\n" );
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document.write( "                  Distance       Rate      Time\r\n" );
document.write( "Moe on the 30 km     30           r       30/r\r\n" );
document.write( "------------------------------------------------------\r\n" );
document.write( "Bob on the 30 km     30         r+1.4   30/(r+1.4) \r\n" );
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\n" ); document.write( "but [Bob] stops for 20 min on route.
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document.write( "That's 1/3 of an hr.\r\n" );
document.write( "                                      \r\n" );
document.write( "                 Distance      Rate      Time\r\n" );
document.write( "Moe                30           r       30/r\r\n" );
document.write( "------------------------------------------------------\r\n" );
document.write( "Bob on the 30 km   30         r+1.4   30/(r+1.4) \r\n" );
document.write( "Bob's stop          0           0       1/3 h  \r\n" );
document.write( "--------------------------------------------------------\r\n" );
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\n" ); document.write( "Even with the delay, Bob finishes 2 hours ahead of Moe.
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document.write( "\"%28matrix%283%2C1%2C%22Bob%27s%22%2C%22total%22%2C%22time%22%29%29\"\"%22%22=%22%22\"\"%28matrix%283%2C1%2C%22Moe%27s%22%2C+total%2C+time%29%29\"\"%22%22-%22%22\"\"2\"     \r\n" );
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document.write( "\"30%2F%28r%2B1.4%29%2B1%2F3\"\"%22%22=%22%22\"\"30%2Fr-2\"\r\n" );
document.write( "\r\n" );
document.write( "\"90r%2Br%28r%2B1.4%29+=+90%28r%2B1.4%29-6r%28r%2B1.4%29\"\r\n" );
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document.write( "Solve that (you can use the quadratic formula if you\r\n" );
document.write( "can't factor.\r\n" );
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document.write( "The approximate rate for Moe is about ????????? km/h\r\n" );
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document.write( "You solve the equation.\r\n" );
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\n" ); document.write( "how long in hours did it take for Moe to finish the walk?
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document.write( "That's a trick question.  Since Bob finished 2 hours \r\n" );
document.write( "ahead of Moe, Moe finished 2 hours later. lol.\r\n" );
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document.write( "Hmmm.  I took it to mean how long after Bob finished did it\r\n" );
document.write( "take for Moe to finish.   But maybe you want Moe's WHOLE\r\n" );
document.write( "time.  If so, divide 30 by what you got for r.\r\n" );
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document.write( "Edwin
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