document.write( "Question 1024200: If the ratio of blue marbles to red marbles is 2:5 and there are 28 marbles altogether,how many marbles are blue,how many are red \n" ); document.write( "

Algebra.Com's Answer #639734 by Fombitz(32388) $\"\"$ $\"About$

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$\"R%2FB=2%2F5\"$
\n" ); document.write( " $\"5R=2B\"$
\n" ); document.write( "and
\n" ); document.write( " $\"R%2BB=28\"$
\n" ); document.write( " $\"2R%2B2B=56\"$
\n" ); document.write( "Substituting,
\n" ); document.write( " $\"2R%2B5R=28\"$
\n" ); document.write( " $\"7R=28\"$
\n" ); document.write( "Solve for R and then use either equation to solve for B. \n" ); document.write( "

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