document.write( "Question 182714: A sack contains red and blue marbles. The ratio of red marbles to blue marbles is 4:3. If there are 18 blue marbles in the sack, how many red marbles are in the sack? \n" ); document.write( "
Algebra.Com's Answer #137181 by Mathtut(3670)\"\" \"About 
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\"4%2F3=x%2F18\"
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\n" ); document.write( "\"3x=72\"
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\n" ); document.write( "\"highlight%28x=24%29\"red marbles
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