document.write( "Question 1013307: jimmy's sister is twice as old as he is. his big brother is 5 years older than he is. the sum of their three ages is 29. How old is jimmy's brother? \n" ); document.write( "
Algebra.Com's Answer #629580 by macston(5194)\"\" \"About 
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\n" ); document.write( "J=Jimmy's age; S=sister's age=2J; B=brother's age=J+5
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\n" ); document.write( "J+S+B=29
\n" ); document.write( "J+(2J)+(J+5)=29
\n" ); document.write( "4J+5=20
\n" ); document.write( "4J=24
\n" ); document.write( "J=6
\n" ); document.write( "Jimmy is 6 years old
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\n" ); document.write( "B=J+5=6+5=11
\n" ); document.write( "ANSWER: Jimmy's brother is 11 years old.
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\n" ); document.write( "CHECK:
\n" ); document.write( "S=2J=2(6)=12
\n" ); document.write( "Jimmy's sister is 12 years old.
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\n" ); document.write( "J+S+B=29
\n" ); document.write( "6+12+11=29
\n" ); document.write( "29=29
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