document.write( "Question 939697: Kayla and her brother mixed together some soil and some silt to make 12 m^3 of soil with a 75% silt content. They used 7 m^3 of silt and 5 m^3 of a soil they purchased. What was the silt content of the soil they purchased? \n" ); document.write( "

Algebra.Com's Answer #572657 by josmiceli(19441) $\"\"$ $\"About$

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Let the m^3 of silt in the soil they purchased = $\"+x+\"$
\n" ); document.write( "Total amount of silt in their mix = $\"+7+%2B+x+\"$
\n" ); document.write( "-----------------------
\n" ); document.write( " $\"+%28+7+%2B+x+%29+%2F+%28+7+%2B+5+%29+=+.75+\"$
\n" ); document.write( " $\"+7+%2B+x+=+.75%2A12+\"$
\n" ); document.write( " $\"+7+%2B+x+=+9+\"$
\n" ); document.write( " $\"+x+=+2+\"$
\n" ); document.write( "There is 2 m^3 of silt in the 5 m^3 soil they purchased\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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