document.write( "Question 625768: 5 years ago I was 1/8 of my dads age.Now both of us together we are 55 year. how old am I and my dad \n" ); document.write( "

Algebra.Com's Answer #393773 by mananth(16946) $\"\"$ $\"About$

You can put this solution on YOUR website!
5 years ago\r
\n" ); document.write( "\n" ); document.write( "Dad's age = x years
\n" ); document.write( "my age = x/8\r
\n" ); document.write( "\n" ); document.write( "Now
\n" ); document.write( "Dad's age = x+5
\n" ); document.write( "my age = x/8 +5 \r
\n" ); document.write( "\n" ); document.write( "sum of ages is 55 \r
\n" ); document.write( "\n" ); document.write( " $\"%28x%2F8%29+%2Bx%2B+5%2B5=55\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%28x%2F8%29+%2Bx%2B+10+=+55\"$ \r
\n" ); document.write( "\n" ); document.write( "multiply equation by 8, the LCD\r
\n" ); document.write( "\n" ); document.write( "x+8x 80 = 55*8
\n" ); document.write( "9x+80 = 440
\n" ); document.write( "9x= 360
\n" ); document.write( "x= 40\r
\n" ); document.write( "\n" ); document.write( "Dad's age 5 years ago = 40 years
\n" ); document.write( "Now his age is 40 +5 = 45 years.\r
\n" ); document.write( "\n" ); document.write( "My age was 40/8 = 5 years.
\n" ); document.write( "Now my age is 5 + 5 = 10 years \n" ); document.write( "

\n" );