document.write( "Question 1186383: A river is flowing at a rate of 5 km/h. A boat travels 12 km upstream and 10 km
\n" ); document.write( "downstream in a total of 5 hours. What is the speed of the boat in still water?
\n" ); document.write( "A. 17.6 km/h
\n" ); document.write( "C. 43.5 km/h
\n" ); document.write( "B. 27.6 km/h
\n" ); document.write( "D. 54.6 km/h
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Algebra.Com's Answer #817279 by josgarithmetic(39620)\"\" \"About 
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b, boat speed
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document.write( "          SPEEDS     TIME             DISTANCE\r\n" );
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document.write( "UP         b-5       12/(b-5)           12\r\n" );
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document.write( "DOWN       b+5       10/(b+5)           10\r\n" );
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document.write( "TOTAL                 5\r\n" );
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\n" ); document.write( "Make the time sum equation.\r
\n" ); document.write( "\n" ); document.write( "\"12%2F%28b-5%29%2B10%2F%28b%2B5%29=5\"
\n" ); document.write( "Simplify and solve.
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