document.write( "Question 610710: Lusine is on a boat going to an island twelve miles away for a picnic. The way there, with the current, it takes her 3 hours while the way back, against the current, it takes her 4 hours. What is the speed of her boat and what is the speed of the current? \n" ); document.write( "
Algebra.Com's Answer #384539 by scott8148(6628)\"\" \"About 
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b + c = 12 / 3\r
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\n" ); document.write( "\n" ); document.write( "b - c = 12 / 4\r
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\n" ); document.write( "\n" ); document.write( "add the equations to find b (c will be eliminated); then substitute back to find c
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