document.write( "Question 1068902: A motorboat, moving at a speed of 10 km/hour, left a pier traveling against the current of the river. Forty-five minutes after the boat left the pier, the motor of the boat broke, and the boat began drifting with the current. After three hours of drifting with the current, the boat was back at the pier where it had started. What is the speed of the current of the river? \n" ); document.write( "
Algebra.Com's Answer #684143 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Against current, \"%2810-c%29%283%2F4%29=d\"\r
\n" ); document.write( "\n" ); document.write( "Back with the current, \"%28c%29%283%29=d\"\r
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\n" ); document.write( "\n" ); document.write( "\"%2810-c%29%283%2F4%29=3c\"
\n" ); document.write( "\"3%2810-c%29=4%2A3c\"
\n" ); document.write( "\"30-3c=12c\"
\n" ); document.write( "\"30=15c\"\r
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\n" ); document.write( "\n" ); document.write( "\"highlight%28c=2%29\"
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