# The ratio of the present ages of Ram and Shyam is  3 : 2. Which of the following cannot be the ratio of their ages 20 years ago?

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The ratio of the present ages of Ram and Shyam is  3 : 2. Which of the following cannot be the ratio of their ages 20 years ago?
A.  8 : 5
B.  17 : 10
C.  9 :5
D.  7 : 5

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Let their present ages be 3x and 2x years.