document.write( "Question 114792: A man lived a fourth of his life as a boy, a fifth as a young man and a third as an adult. He spent 13 years in his old age. How old was he when he died? \n" ); document.write( "
Algebra.Com's Answer #83522 by ganesh(20)![]() ![]() ![]() You can put this solution on YOUR website! Let x be the age when the man died.\r \n" ); document.write( "\n" ); document.write( "Then (1/4)x + (1/5)x + (1/3)x + 13 = x ( Since, a fourth of his life was lived as a boy can be written as (1/4)x.\r \n" ); document.write( "\n" ); document.write( "Solve the above equation. \r \n" ); document.write( "\n" ); document.write( "(1/4)x + (1/5)x + (1/3)x - x = -13\r \n" ); document.write( "\n" ); document.write( "(1/60){15x +12x + 20x - 60x}= -13 ( Take LCM) \n" ); document.write( "-13x = -780 \n" ); document.write( "x = 60.\r \n" ); document.write( "\n" ); document.write( "The age of death is 60 \n" ); document.write( " |