document.write( "Question 637321: i am eight times older than my daughter now. in three years, i will be five times older than she is. how old am i? \n" ); document.write( "
Algebra.Com's Answer #401604 by DrBeeee(684)![]() ![]() ![]() You can put this solution on YOUR website! Let m = my present age \n" ); document.write( " d = daughter's present age \n" ); document.write( "Presently \n" ); document.write( "(1) m = 8*d \n" ); document.write( "In 3 years I will be m + 3 and daughter d + 3 and at that time I will be 5 times as old as my daughter or \n" ); document.write( "m + 3 = 5*(d + 3) or \n" ); document.write( "m = 5d + 15 - 3 \n" ); document.write( "(2) m = 5d +12 \n" ); document.write( "Using (1) in (2) we have \n" ); document.write( " 8d = 5d + 12 \n" ); document.write( " 3d = 12 \n" ); document.write( " d = 4 \n" ); document.write( " m = 32 \n" ); document.write( "In 3 years I will be 35 and my daughter will be 7. I will be 5 times as old as stated.\r \n" ); document.write( "\n" ); document.write( "Answer is: I am 32 and my daughter is 4. \n" ); document.write( " |