document.write( "Question 1077521: My sister is 8 years older than I am. Our combined age is half the age of my grandfather. Our grandfather is 68. How old am I ? \n" ); document.write( "
Algebra.Com's Answer #692037 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
p, Person
\n" ); document.write( "s, Sister
\n" ); document.write( "68, Grandfather\r
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\n" ); document.write( "\n" ); document.write( "\"system%28s=p%2B8%2Cp%2Bs=68%2F2%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"p%2Bs=34\"
\n" ); document.write( "\"p%2Bp%2B8=34\"
\n" ); document.write( "\"2p%2B8=34\"
\n" ); document.write( "\"p%2B4=17\"
\n" ); document.write( "\"highlight%28p=13%29\"---------answer's the question.\r
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\n" ); document.write( "\n" ); document.write( "\"highlight%28s=21%29\"
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