document.write( "Question 657861: at the moment john is 5 years older than mary. in seven years mary age will be 3/4 of john age how old are they now? \n" ); document.write( "
Algebra.Com's Answer #410037 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! at the moment john is 5 years older than mary. in seven years mary age will be 3/4 of john age how old are they now? \n" ); document.write( "** \n" ); document.write( "let x=mary's age now \n" ); document.write( "x+5=john's age now \n" ); document.write( "7 years hence: \n" ); document.write( "x+7=mary's age \n" ); document.write( "x+5+7=x+12=john's age \n" ); document.write( ".. \n" ); document.write( "x+7=(3/4)(x+12) \n" ); document.write( "4x+28=3x+36 \n" ); document.write( "x=36-28=8 \n" ); document.write( "x+5=13 \n" ); document.write( "mary's age now=8 \n" ); document.write( "john's age now=13 \n" ); document.write( " |