document.write( "Question 894393: Mark has 3 times more marbles than Mike has. Together Mark and Mike have 400 marbles. How many marbles do Mark and Mike each have? \n" ); document.write( "
Algebra.Com's Answer #542018 by Alan3354(69443)\"\" \"About 
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Mark has 3 times more marbles than Mike has. Together Mark and Mike have 400 marbles. How many marbles do Mark and Mike each have?
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\n" ); document.write( "3x more = 4 times as many
\n" ); document.write( "Mark = 4*Mike
\n" ); document.write( "Mark + Mike = 400
\n" ); document.write( "4*Mike + Mike = 400
\n" ); document.write( "5*Mike = 400
\n" ); document.write( "Mike has 80 marbles
\n" ); document.write( "Mark has 320 marbles
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