document.write( "Question 866725: 1 year ago a mother was four times older than her son. after 6 years her age become more than double her sons age by 5 years. what will be the ratio of their present age?\r
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\n" ); document.write( "\n" ); document.write( "plz answer this question... \n" ); document.write( "

Algebra.Com's Answer #522446 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+m+\"$ = mother's age now
\n" ); document.write( "Let $\"+s+\"$ = son's age now
\n" ); document.write( " $\"+m+-+1+\"$ = mother's age 1 year ago
\n" ); document.write( " $\"+s+-+1+\"$ = son's age 1 year ago
\n" ); document.write( " $\"+m+%2B+6+\"$ = mother's age in 6 years
\n" ); document.write( " $\"+s+%2B+6+\"$ = son's age in 6 years
\n" ); document.write( "------------------------------------------
\n" ); document.write( "(1) $\"+m+-+1+=+4%2A%28+s+-+1+%29+\"$
\n" ); document.write( "(2) $\"+m+%2B+6+=+2%2A%28+s+%2B+6+%29+%2B+5+\"$
\n" ); document.write( "------------------------------------
\n" ); document.write( "(1) $\"+m+-+1+=+4s+-+4+\"$
\n" ); document.write( "(1) $\"+4s+-+m+=+3+\"$
\n" ); document.write( "and
\n" ); document.write( "(2) $\"+m+%2B+6+=+2s+%2B+12+%2B+5+\"$
\n" ); document.write( "(2) $\"+m+%2B+6+=+2s+%2B+17+\"$
\n" ); document.write( "(2) $\"+-2s+%2B+m+=+11+\"$
\n" ); document.write( "----------------------------
\n" ); document.write( "Add (1) and (2)
\n" ); document.write( "(2) $\"+-2s+%2B+m+=+11+\"$
\n" ); document.write( "(1) $\"+4s+-+m+=+3+\"$
\n" ); document.write( " $\"+2s+=+14+\"$
\n" ); document.write( " $\"+s+=+7+\"$
\n" ); document.write( "and, since
\n" ); document.write( "(1) $\"+m+-+1+=+4%2A%28+s+-+1+%29+\"$
\n" ); document.write( "(1) $\"+m+-+1+=+4%2A%28+7+-+1+%29+\"$
\n" ); document.write( "(1) $\"+m+-+1+=+24+\"$
\n" ); document.write( "(1) $\"+m+=+25+\"$
\n" ); document.write( "-----------------------
\n" ); document.write( "The mother is 25
\n" ); document.write( "The son is 7
\n" ); document.write( "-------------
\n" ); document.write( "check:
\n" ); document.write( "(2) $\"+m+%2B+6+=+2%2A%28+s+%2B+6+%29+%2B+5+\"$
\n" ); document.write( "(2) $\"+25+%2B+6+=+2%2A%28+7+%2B+6+%29+%2B+5+\"$
\n" ); document.write( "(2) $\"+31+=+2%2A13+%2B+5+\"$
\n" ); document.write( "(2) $\"+31+=+26+%2B+5+\"$
\n" ); document.write( "(2) $\"+31+=+31+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+m+-+1+=+4%2A%28+s+-+1+%29+\"$
\n" ); document.write( "(1) $\"+25+-+1+=+4%2A%28+7+-+1+%29+\"$
\n" ); document.write( "(1) $\"+24+=+4%2A6+\"$
\n" ); document.write( "(1) $\"+24+=+24+\"$
\n" ); document.write( "OK \n" ); document.write( "

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