document.write( "Question 1035703: Rony, who is sixteen years old, is four times as old as his sister. How old will Rony be when he is twice as old as his sister? \n" ); document.write( "
Algebra.Com's Answer #650360 by robertb(5830)\"\" \"About 
You can put this solution on YOUR website!
Let x = number of years in the future. \r
\n" ); document.write( "\n" ); document.write( "If Rony is 16 now, then his sister is 16/4 = years old now.\r
\n" ); document.write( "\n" ); document.write( "==> 16 + x = 2(4 + x) ==> 16 + x = 8 + 2x ==> x = 8.\r
\n" ); document.write( "\n" ); document.write( "Hence when Rony is 16 + 8 = 24 he will be twice as old as his sister.
\n" ); document.write( "
\n" );