document.write( "Question 1196134: Sandra is 63 years older than her grandson. Five years ago, she was 4 times as old as he was. How old is she \n" ); document.write( "

Algebra.Com's Answer #828841 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Sandra is 63 years older than her grandson.
\n" ); document.write( "s = g + 63
\n" ); document.write( " Five years ago, she was 4 times as old as he was.
\n" ); document.write( "s - 5 = 4(g-5)
\n" ); document.write( "distribute the 4
\n" ); document.write( "s - 5 = 4g - 20
\n" ); document.write( "s = 4g - 20 + 5
\n" ); document.write( "s = 4g - 15
\n" ); document.write( "replace s with (g+63) from the 1st statement
\n" ); document.write( "g + 63 = 4g - 15
\n" ); document.write( "63 + 15 = 4g - g
\n" ); document.write( "78 = 3g
\n" ); document.write( "g = 78/3
\n" ); document.write( "g = 26 is the grandson's age
\n" ); document.write( "How old is she?
\n" ); document.write( "Using the 1st equation, find s
\n" ); document.write( "s = 26 + 63
\n" ); document.write( "s = 89 yr is Sandra's age
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "See if that checks out in the statement
\n" ); document.write( "\"Five years ago, she was 4 times as old as he was.\"
\n" ); document.write( "89 - 5 = 4(26-5)
\n" ); document.write( "84 = 4*21 \n" ); document.write( "

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