document.write( "Question 1093259: a man is 24 years older thab his son,after 10 years he will be 3 times as old as his son how old is the son? \n" ); document.write( "
Algebra.Com's Answer #707882 by josmiceli(19441)\"\" \"About 
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Let \"+a+\" = man's age now
\n" ); document.write( "Let \"+b+\" = son's age now
\n" ); document.write( "\"+a+%2B+10+\" = man's age in 10 yrs
\n" ); document.write( "\"+b+%2B+10+\" = son's age in 10 yrs
\n" ); document.write( "-------------------------------
\n" ); document.write( "(1) \"+a+=+b+%2B+24+\"
\n" ); document.write( "(2) \"+a+%2B+10+=+3%2A%28+b+%2B+10+%29+\"
\n" ); document.write( "-------------------------------
\n" ); document.write( "(1) \"+a+-+b+=+24+\"
\n" ); document.write( "-------------------------------
\n" ); document.write( "(2) \"+a+%2B+10+=+3b+%2B+30+\"
\n" ); document.write( "(2) \"+a+-+3b+=+20+\"
\n" ); document.write( "-------------------------------
\n" ); document.write( "Subtract (2) from (1)
\n" ); document.write( "(1) \"+a+-+b+=+24+\"
\n" ); document.write( "(2) \"+-a+%2B+3b+=+-20+\"
\n" ); document.write( "------------------------
\n" ); document.write( "\"+2b+=+4+\"
\n" ); document.write( "\"+b+=+2+\"
\n" ); document.write( "The son is 2 yrs old
\n" ); document.write( "-----------------------
\n" ); document.write( "check:
\n" ); document.write( "(1) \"+a+-+b+=+24+\"
\n" ); document.write( "(1) \"+a+-+2+=+24+\"
\n" ); document.write( "(1) \"+a+=+26+\"
\n" ); document.write( "and
\n" ); document.write( "(2) \"+a+-+3b+=+20+\"
\n" ); document.write( "(2) \"+a+-+3%2A2+=+20+\"
\n" ); document.write( "(2) \"+a+=+26+\"
\n" ); document.write( "OK
\n" ); document.write( "
\n" ); document.write( "
\n" );