Answer: D) Delhi Explanation:

Answer: C) Aunt and Nephew Explanation: Clearly, the brother of woman's mother is the same as the brother of the father of boy's maternal uncle. So, the woman's mother's brother is the boy's maternal uncle's father. Thus the woman's mother's brother's son is boy's maternal uncle, i.e woman's mother's  brother's daughter is boy's mother.

Answer: C) Sister Explanation: Only son of woman's grandfather - woman's father;  Man's brother's father - Man's father  So, man's father is woman's father i.e woman is the man's sister.

Answer: B) Brother-in-law Explanation: Father's father ---->Grandfather;  Grandfather's granddaughter -----> Sister; Sister's husband ---->Brother-in-law. So, Y is X's Brother-in-law.

Answer: D) Cousin Explanation: Clearly, D's father is the brother of C's father and C's father is A's Uncle. So, D's father is also A's Uncle. Thus, D is A's cousin.

Answer: C) Y is the Son of A Explanation: A is the father of X and Y is the sister of X. So, Y is the daughter of A.

Given that, A+B = 60  and A = 2B. Solving, We get A = 40, B = 20. Five years their ages will be 45 and 25, so the sum of their ages will be 70.

As the ratio of their present ages is 3 : 4 , let their present ages be 3X and 4X. So, 5 years ago, as the ratio of their ages was 5 : 7, we can write  (3x-5) : (4x-5) = 5 : 7. Solving, we get X = 10. Hence, their present ages are 3X = 30 and 4X = 40