document.write( "Question 954362: how many cubic inches of a candy barthat is 45% dark chocolate must be melted and mixed with 18 cubic inches of a candy bar that is 20% dark chocolate to obtain a candy bar that is 30% dark chocolate? \n" ); document.write( "

Algebra.Com's Answer #582860 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = in3 of 45% dark chocolate needed
\n" ); document.write( " $\"+.45x+\"$ = in3 of dark chocolate in 45% mix
\n" ); document.write( " $\"+.2%2A18+=+3.6+\"$ in3 of dark chocolate in 20% mix
\n" ); document.write( "---------------------------------------------
\n" ); document.write( " $\"+%28+.45x+%2B+3.6+%29+%2F+%28+x+%2B+18+%29+=+.3+\"$
\n" ); document.write( " $\"+.45x+%2B+3.6+=+.3%2A%28+x+%2B+18+%29+\"$
\n" ); document.write( " $\"+.45x+%2B+3.6+=+.3x+%2B+5.4+\"$
\n" ); document.write( " $\"+.15x+=+1.8+\"$
\n" ); document.write( " $\"+x+=+12+\"$
\n" ); document.write( "----------------
\n" ); document.write( "12 in3 of the 45% dark chocolate are needed
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