document.write( "Question 1130467: Karen paddled A canoe 10 miles upstream and then paddled back to the starting point. If the rate of the current was 3 MPH and the entire trip took 3.5 hours, what was her rate? \n" ); document.write( "
Algebra.Com's Answer #747141 by ikleyn(52788)\"\" \"About 
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document.write( "If x is the rate of the canoe in still water, then\r\n" );
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document.write( "    (x+3) mph is the effective speed downstream,  and\r\n" );
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document.write( "    (x-3) mph is the effective speed   upstream.\r\n" );
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document.write( "So,  \"10%2F%28x%2B3%29\" is the time downstream, while  \"10%2F%28x-3%29\"  is the time upstream, so the \"time\" equation is\r\n" );
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document.write( "    \"10%2F%28x%2B3%29\" + \"10%2F%28x-3%29\" = 3.5   hours.     (*)\r\n" );
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document.write( "At this point the setup is completed.\r\n" );
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document.write( "To complete the solution, reduce equation (*) to a quadratic equation by multiplying its both sides by 2*(x+3)*(x-3) and solve.\r\n" );
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document.write( "The rest is just arithmetic.\r\n" );
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\n" ); document.write( "\n" ); document.write( "To see many similar solved problems,  look into the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Wind and Current problems \r
\n" ); document.write( "\n" ); document.write( "    - More problems on upstream and downstream round trips \r
\n" ); document.write( "\n" ); document.write( "    - Wind and Current problems solvable by quadratic equations \r
\n" ); document.write( "\n" ); document.write( "    - Unpowered raft floating downstream along a river\r
\n" ); document.write( "\n" ); document.write( "    - Selected problems from the archive on the boat floating Upstream and Downstream \r
\n" ); document.write( "\n" ); document.write( "in this site, where you will find other similar solved problems with detailed explanations.\r
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\n" ); document.write( "\n" ); document.write( "Read them attentively and learn how to solve this type of problems once and for all.\r
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\n" ); document.write( "\n" ); document.write( "Also,  you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this textbook under the section \"Word problems\",  the topic \"Travel and Distance problems\".\r
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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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