<PRE><B>Question 1156869</B>
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 The scrap metal is melted together and produces 1420 g of metal that is 47% copper. How many grams of the 33% copper metal was mixed with the 53% copper metal?
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v grams of the 53% copper
1420-v grams of the 33% copper


{{{53v+33(1420-v)=47*1420}}}

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{{{53v-33v+33*1420=47*1420}}}
{{{(53-33)v=47*1420-33*1420}}}

{{{highlight(v=1420((47-33)/(53-33)))=1420(14/20)=highlight(1420(7/10))}}}



994 grams of the 53% copper metal
426 grams of the 33% copper metal</PRE>