document.write( "Question 903493: Suppose I am a grandmother. My granddaughter is about as old in days as my daughter is in weeks. She is also as many months old as I am in years. Together, the three of us are 140 years old. How old am I? \n" ); document.write( "
Algebra.Com's Answer #548097 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Suppose I am a grandmother.
\n" ); document.write( "let a = grandma's age
\n" ); document.write( "let d = daughter's age
\n" ); document.write( "let g = granddaughter's age
\n" ); document.write( " My granddaughter is about as old in days as my daughter is in weeks.
\n" ); document.write( "365g = 52d
\n" ); document.write( "divide both sides by 52 Approx
\n" ); document.write( "7g = d\r
\n" ); document.write( "\n" ); document.write( " She is also as many months old as I am in years.
\n" ); document.write( "12g = a
\n" ); document.write( " Together, the three of us are 140 years old.
\n" ); document.write( "a + d + g = 140
\n" ); document.write( "replace d with 7g, replace a with 12g
\n" ); document.write( "12g + 7g + g = 140
\n" ); document.write( "20g = 140
\n" ); document.write( "g = 140/20
\n" ); document.write( "g = 7 yrs old is the granddaughter
\n" ); document.write( ":
\n" ); document.write( "How old am I?
\n" ); document.write( "a = 12(7)
\n" ); document.write( "a = 84 yrs is grandma
\n" ); document.write( "
\n" );