document.write( "Question 291776: A sink can be filled in 3 minutes. Suzi is filling and draining the sink at the same time. In 15 minutes the sink starts to overflow. How many minutes does it take to drain the sink? \n" ); document.write( "
Algebra.Com's Answer #210997 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A sink can be filled in 3 minutes. Suzi is filling and draining the sink at the same time. \n" ); document.write( "In 15 minutes the sink starts to overflow. \n" ); document.write( " How many minutes does it take to drain the sink? \n" ); document.write( ": \n" ); document.write( "Let x = time required to drain the sink \n" ); document.write( ": \n" ); document.write( "Let the full sink = 1 \n" ); document.write( ": \n" ); document.write( "Filling (+) draining(-) \n" ); document.write( " \n" ); document.write( "multiply equation by 3x \n" ); document.write( "15x - 3(15) = 3x \n" ); document.write( "15x - 45 = 3x \n" ); document.write( "15x - 3x = 45 \n" ); document.write( "12x = 45 \n" ); document.write( "x = \n" ); document.write( "x = 3.75 minutes to drain a full sink \n" ); document.write( "; \n" ); document.write( ": \n" ); document.write( "Check solution \n" ); document.write( " \n" ); document.write( "5 - 4 = 1 \n" ); document.write( " \n" ); document.write( " |