document.write( "Question 895129: In 3 years time a pet mouse will be as old as his owner was 4 years ago. Their present total age is 13 years. Find the age of each now \n" ); document.write( "
Algebra.Com's Answer #542585 by BreeCure(1)\"\" \"About 
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Let y be the age of the owner
\n" ); document.write( "let x be the age of the pet
\n" ); document.write( "Therefore: x+y=13
\n" ); document.write( " x+3=y-4
\n" ); document.write( "then solve for x
\n" ); document.write( "x+y=13
\n" ); document.write( "x=13-y
\n" ); document.write( "x+3=13-x-4
\n" ); document.write( "2x=6
\n" ); document.write( "x=3
\n" ); document.write( "then solve y
\n" ); document.write( "y=13-3
\n" ); document.write( "y=10
\n" ); document.write( "therefore the pet's age is 3years and the owner's age is 10years
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