document.write( "Question 620281: assuming that y varies directly as x, if y = 50 when x = 8, find x when y = 75 \n" ); document.write( "
Algebra.Com's Answer #390047 by MsRedz123(24)\"\" \"About 
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If y varies directly as x. Then, y=kx where k is constant.\r
\n" ); document.write( "\n" ); document.write( "y=kx
\n" ); document.write( "50=k(8)
\n" ); document.write( "50/8=k(8)/8
\n" ); document.write( "k=50/8 or 25/4\r
\n" ); document.write( "\n" ); document.write( "y=kx
\n" ); document.write( "75=(25/4)(x)
\n" ); document.write( "75/(25/4)=x
\n" ); document.write( "x=75(4/25)
\n" ); document.write( "x=300/25
\n" ); document.write( "x=12\r
\n" ); document.write( "\n" ); document.write( "Therefore, x is 12.
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