document.write( "Question 950508: A jar contains a total of 20 red, black and blue marbles. There are two more black marbles than red marbles and four more blue marbles than black marbles. How many marbles of each color are there? \n" ); document.write( "

Algebra.Com's Answer #580518 by Fombitz(32388) $\"\"$ $\"About$

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R-Red
\n" ); document.write( "B-Black
\n" ); document.write( "U-Blue
\n" ); document.write( " $\"R%2BB%2BU=20\"$
\n" ); document.write( " $\"B=2%2BR\"$
\n" ); document.write( " $\"U=4%2BB=4%2B2%2BR=6%2BR\"$
\n" ); document.write( "Substitute,
\n" ); document.write( " $\"R%2B2%2BR%2B6%2BR=20\"$
\n" ); document.write( " $\"3R%2B8=20\"$
\n" ); document.write( " $\"3R=12\"$
\n" ); document.write( " $\"R=4\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"B=2%2B4\"$
\n" ); document.write( " $\"B=6\"$
\n" ); document.write( "and
\n" ); document.write( " $\"U=6%2B4\"$
\n" ); document.write( " $\"U=10\"$
\n" ); document.write( " \n" ); document.write( "

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