document.write( "Question 1110188: A boat goes 30km upstream and 44kms downstream in 10hrs.In 13hrs it can go 40kms upstream and 55kms downstream.The speed of the boat in still water is? \n" ); document.write( "
Algebra.Com's Answer #725184 by josgarithmetic(39618)\"\" \"About 
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\n" ); document.write( "A boat goes 30km upstream and 44kms downstream in 10hrs.
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\n" ); document.write( "\n" ); document.write( "r, boat speed without current
\n" ); document.write( "c, speed of current\r
\n" ); document.write( "\n" ); document.write( "time, \"30%2F%28r-c%29%2B44%2F%28r%2Bc%29=10\"\r
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\n" ); document.write( "In 13hrs it can go 40kms upstream and 55kms downstream.
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\n" ); document.write( "\n" ); document.write( "\"40%2F%28r-c%29%2B55%2F%28r%2Bc%29=13\"\r
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\n" ); document.write( "The speed of the boat in still water is?
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\n" ); document.write( "\n" ); document.write( "I did not show a finished solution. Only showed a possible way to start analyzing the description. Two equations in the two unknown variables, r and c.
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