document.write( "Question 34250: please help me solve this word problem. It is a PUZZLE WORD PROBLEM.\r
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document.write( "Mary is three years older than her twin brothers. Next year, the sum of the ages of the three will be exactly 102. How old are they now?\r
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document.write( "Anything about this problem would be helpful. Thanks =] \n" );
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Algebra.Com's Answer #20549 by fanism(39)![]() ![]() ![]() You can put this solution on YOUR website! let Mary be M years old and her brother be B years old\r \n" ); document.write( "\n" ); document.write( "Mary is three years older than her twin brothers, therefore \n" ); document.write( "M = 3 + B -- eq1\r \n" ); document.write( "\n" ); document.write( "Next year, the sum of the ages of the three will be exactly 102. \n" ); document.write( "Since each one of them will grow 1 year old, therefore, \n" ); document.write( "102 = (M+1) + (B+1) + (B+1) -- eq2\r \n" ); document.write( "\n" ); document.write( "Sub eq1 into eq2, \n" ); document.write( "102 = (3+B+1) + (B+1) + (B+1) \n" ); document.write( "102 = 3B + 6 \n" ); document.write( "96 = 3B \n" ); document.write( "B = 32\r \n" ); document.write( "\n" ); document.write( "Put B = 32 into eq1, \n" ); document.write( "M = 3 + 32 \n" ); document.write( "M = 35\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |