The ratio of spinsters to cats is 2 to 9. If there are 42 more cats than spinsters, how many spinsters are there?	Choose the correct answer
A) 9  B) 10  C) 11  D) 12  E) 13
Let 2x be the number of spinsters. Then 9x is the number of cats.   9x-2x=42   x=6 and the number of spinsters is 2(6)=12.   The answer is 12.
<result>D</result>
The ratio of spinsters to cats is 2 to 9. If there are 42 more cats than spinsters, how many spinsters are there?