document.write( "Question 930224: Mr Edwards is now 3 times as old as his daughter.in 15 years time the sum of their age as will be 86
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document.write( " A)find their ages now
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document.write( " B)How old was Mr Edwards when his daughter was born \n" );
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Algebra.Com's Answer #564778 by algebrahouse.com(1659)![]() ![]() You can put this solution on YOUR website! x = daughter's age now \n" ); document.write( "3x = Mr. Edwards' age now {he is 3 times his daughter}\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x + 15 = daughter in 15 years {added 15 onto daughter's current age} \n" ); document.write( "3x + 15 = Mr. Edwards in 15 years {added 15 onto Mr. Edwards' current age}\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x + 15 + 3x + 15 = 86 {sum of their ages, in 15 years, will be 86} \n" ); document.write( "4x + 30 = 86 {combined like terms} \n" ); document.write( "4x = 56 {subtracted 30 from each side} \n" ); document.write( "x = 14 {divided each side by 4} \n" ); document.write( "3x = 42 {substituted 14, in for x, into 3x}\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "His daughter is 14 and Mr. Edwards is 42, and \n" ); document.write( "Mr. Edwards was 28 when his daughter was born {subtracted 14 from 42} \n" ); document.write( " For more help from me, visit: www.algebrahouse.com \n" ); document.write( " |