document.write( "Question 378025: Betty is 12, exactly one third as old as her father. in how many years will she be half as old as he is?Betty is 12, exactly one third as old as her father. in how many years will she be half as old as he is? \n" ); document.write( "
Algebra.Com's Answer #268653 by mananth(16946)![]() ![]() You can put this solution on YOUR website! Betty is 12, exactly one third as old as her father. in how many years will she be half as old as he is?\r \n" ); document.write( "\n" ); document.write( "Betty is 12 years \n" ); document.write( "she is 1/3 fathers age \n" ); document.write( "so father is 12*3 = 36 years \n" ); document.write( ".. \n" ); document.write( "after x years they will be \n" ); document.write( "betty = 12+x \n" ); document.write( "Father = 36+x \n" ); document.write( ".. \n" ); document.write( "12+x= 1/2 * (36+x) \n" ); document.write( "multiply by 2 \n" ); document.write( "2(12+x)= 36+x \n" ); document.write( "24+2x=36+x \n" ); document.write( "-x \n" ); document.write( "24+2x-x=36+x-x \n" ); document.write( "24+x=36 \n" ); document.write( "-24 \n" ); document.write( "x+24-24=36-24 \n" ); document.write( "x=12 \n" ); document.write( "After 12 years she will be 1/2 father's age. \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |