document.write( "Question 1074147: Mike is three times as old as his little sister mary. in four years, he will be twice as old as mary. how old is mary?
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Algebra.Com's Answer #688883 by jorel1380(3719)![]() ![]() You can put this solution on YOUR website! Let m represent marys' age. Then Mike would be 3m. So: \n" ); document.write( "3m+4=2(m+4) \n" ); document.write( "3m+4=2m+8 \n" ); document.write( "m=4 \n" ); document.write( "Mary is 4; Mike is 12. ☺☺☺☺ \n" ); document.write( " |