The ratio of the present ages of a man and his wife is 6 : 5. Which of the following can't be a possible ratio of their ages 35 years ago?
Pick one.
A) 4: 6  B) 5: 6  C) 6:6  D) 7: 6  E) 8: 6
6x-35/5x-35 = 7/6   Therefore x=-35   Age cannot be negative.   Answer: 7: 6
<result>D</result>
The ratio of the present ages of a man and his wife is 6 : 5. Which of the following can't be a possible ratio of their ages 35 years ago?