document.write( "Question 793774: Mr tan Is 55 Years old and Tony Is 7 years Old. in how Many Years time Will Mr tan Be Four Times As Old as tony \n" ); document.write( "
Algebra.Com's Answer #480483 by sunny1992(35)\"\" \"About 
You can put this solution on YOUR website!
let,
\n" ); document.write( "after X year tan will be four times as old as tony
\n" ); document.write( "so we have,
\n" ); document.write( "Tony age after X years = 7+X
\n" ); document.write( "Mr Tan = 55+X\r
\n" ); document.write( "\n" ); document.write( "4(7+X)=55+X
\n" ); document.write( "28+4X=55+x
\n" ); document.write( "3X=27
\n" ); document.write( "X=9
\n" ); document.write( "
\n" );