document.write( "Question 242972: x varies inversely with y. When x is 40, y is 50. What is y when x is 25? \n" ); document.write( "
Algebra.Com's Answer #177980 by nerdybill(7384)\"\" \"About 
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From:
\n" ); document.write( " x varies inversely with y
\n" ); document.write( "we have
\n" ); document.write( "x = k/y
\n" ); document.write( ".
\n" ); document.write( "From:
\n" ); document.write( " When x is 40, y is 50
\n" ); document.write( "we have
\n" ); document.write( "40 = k/50
\n" ); document.write( "40*50 = k
\n" ); document.write( "2000 = k
\n" ); document.write( ".
\n" ); document.write( "So, when x is 25
\n" ); document.write( "25 = 2000/y
\n" ); document.write( "25y = 2000
\n" ); document.write( "y = 80\r
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