document.write( "Question 435128: If it takes 3 hrs to travel 15 miles downstream and 5 hr to travel upstream, how fast is the current if the speed of the boat remains constant? \n" ); document.write( "
Algebra.Com's Answer #312850 by jorel1380(3719)\"\" \"About 
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15/3=5 mph
\n" ); document.write( "15/5=3 mph
\n" ); document.write( "5+3/2=4 mph equals speed of the boat
\n" ); document.write( "5-4=1
\n" ); document.write( "4-3=1
\n" ); document.write( "The speed of the current is 1 mph..
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