document.write( "Question 841378: a boy is 12 years old and is 1/3 of his fathers age. how old will his father be when the boy is 24 \n" ); document.write( "
Algebra.Com's Answer #506871 by josmiceli(19441)\"\" \"About 
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Let \"+f+\" = the father's age
\n" ); document.write( "I can say:
\n" ); document.write( "\"+12+=+%281%2F3%29%2Af+\"
\n" ); document.write( "\"+f+=+3%2A12+\"
\n" ); document.write( "\"+f+=+36+\"
\n" ); document.write( "----------------
\n" ); document.write( "The difference in their ages does not change
\n" ); document.write( "It is \"+36+-+12+=+24+\"
\n" ); document.write( "So, when the boy is 24 the father is
\n" ); document.write( "\"+24+%2B+24+=+48+\"
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