document.write( "Question 515073: Carol's cat weighs 2 pounds. Doug's dog weighs 14 pounds. Both pets are gaining
\n" ); document.write( "about a pound a month. If they keep on gaining weight like that, the dog will soon weigh three times as much as the cat. How many pounds will the cat weigh then?
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Algebra.Com's Answer #343690 by Maths68(1474)\"\" \"About 
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Cat = 2 lb
\n" ); document.write( "Dog = 14 lb\r
\n" ); document.write( "\n" ); document.write( "Let both gain x lb
\n" ); document.write( "(Dog + x)=3*(Cat+x)
\n" ); document.write( "14+x=3(2+x)
\n" ); document.write( "14+x=6+3x
\n" ); document.write( "x-3x=6-14
\n" ); document.write( "-2x=-8
\n" ); document.write( "-2x/-2=-8/-2
\n" ); document.write( "x=4\r
\n" ); document.write( "\n" ); document.write( "Cat = 2lb + 4lb = 6 lbs
\n" ); document.write( "Dog = 14lb + 4lb = 18 lbs\r
\n" ); document.write( "\n" ); document.write( "The cat wil weigh 6 pounds.\r
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