document.write( "Question 991876: A father and son's age is 50. After five years, the father is three times the age of the son. How old is their present age? \n" ); document.write( "
Algebra.Com's Answer #611881 by satyareddy22(84)![]() ![]() ![]() You can put this solution on YOUR website! Let the age of father be x and the age of son be y. \n" ); document.write( "x+y=50-----------(1) \n" ); document.write( "x+5=3(y+5)=3y+15 \n" ); document.write( "x+5=3y+15=>x-3y=10-----(2) \n" ); document.write( "solving (1)& (2) \n" ); document.write( "from (1) x=50-y,substituting in(2) \n" ); document.write( "50-y-3y=10 \n" ); document.write( "3y+y=50-10 \n" ); document.write( "4y=40=>y=40/4=10 \n" ); document.write( "y=10yrs \n" ); document.write( "x=50-10=40=>x=40yrs \n" ); document.write( "Therefore the age of father is 40years & age of son is 10 years. \n" ); document.write( " |