document.write( "Question 1146673: A certain brass alloy contains 35% zinc and 3.0% lead. Then x kg of zinc and y kg of lead are added to 200kg of the original alloy to make a new alloy that is 40% zinc and 4.0% lead.
\n" ); document.write( "(a) Show that the amount of zinc is given by
\n" ); document.write( "0.35(200) + x = 0.40(200 + x + y)
\n" ); document.write( "and that the amount of lead is given by
\n" ); document.write( "0.030(200) + y = 0.040(200 + x + y)
\n" ); document.write( "(b) Solve for x and y.\r
\n" ); document.write( "\n" ); document.write( "Please show all steps. Thanks.
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Algebra.Com's Answer #767955 by josgarithmetic(39617)\"\" \"About 
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