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ArupSarker
The ratio between the ages of Mary and her mother is 1: 2 and that of Mary and her father is 1: 3 at the time of Mary's birth. Mary is 10 years old now. Find out the ratio between the ages of Mary's mother and father at this age of Mary.

a. 1:2
b. 1:3
c. 2:3
d. 3:2
e. none of the above
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Ratio of Mary's Mother and Father is 2:3

Thus, the correct answer will be (C) 2:3
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Let Mary's age at birth be x.
Let her mother's age be M and father's age be F

x/M = 1/2
M = 2x

x/F = 1/3
F = 3x
This is at the time of Mary's birth, so the ages of her mother and father are in (ratio 2:3)

So 10 years later, the ratio is 2x+10 : 3x+10

IMO, the answer is e. None of the above or the question is wrongly worded!
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The question is not correctly framed ... At the time of Mary's Birth, her age will be 0 ratio doesnt matter.. Anyways E would be the answer ..

Even If we assume initial age of mary as 1 then age of her mother and her father would be 2 and 3 respectively.
In that case the current age of mother and father would be 11 and 12.:. Answer would remain as E.

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I agree ... language is ambiguous..we can do this by assuming numbers...
Consider 10 ... Mary's age 10
Mary's mother age 20
Mary's father age 30
M:F =2:3
C option
Please correct me if I am wrong.....

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That ratio of ages between mary's mother and mary's father mentioned is 2:3, it is at the time of birth. They are asking for the currrent age ratio ... 2x+10/3x+10...

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