document.write( "Question 701145: When I was 4 years old my sister was half of my age.\r
\n" ); document.write( "\n" ); document.write( "Now I am 100 years. How old is my sister?
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Algebra.Com's Answer #432240 by Simnepi(216)\"\" \"About 
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'When I was 4 my sister was half my age'
\n" ); document.write( "So 'my age' = 4, 'my sister's age' = 2.
\n" ); document.write( "The difference in our ages is 2 years,
\n" ); document.write( "So, when I am 100 my sister will be 2 years younger than me.
\n" ); document.write( "My sister is 98 years old.
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