Answer: Option D Explanation:let the ages of promila and sakshi 1 year ago 4x and x years respectively.
Then [(4x+1)+6] - [(x+1)+6] = 9 <=> 3x = 9 <=> x=3
Therefore required ratio = (4x+1) : (x+1) = 13:4
Answer: Option B Explanation:Let their present ages be 4x, 7x and 9x years respectively
Then (4x - 8) + (7x -8) (9x -8) = 56 <=> 20x =80 <=> x =4
Their present ages are 16 years, 28 years and 36 years respectively.
Answer: Option C Explanation:Let the present ages of the man and his wife be 4x and 3x years respectively.
Then, 4x+4/3x+4 = 9/7 <=> 7(4x+4)=9(3x+4) <=> x = 8
So their present ages are 32 years and 24 years respectively.
Suppose they were married Z years ago
Then 32-z/24-z = 5/3 <=> 3(32-z) = 5(24-z) <=> 2z = 24 <=> z = 12
Answer: Option D Explanation:Let c's age be X years.
Then B's age = 2x years. A's age = (2X+2) years
Therefore (2X+2) + 2x+x = 27 <=> 5x=25 <=> x=5
Hence B's age = 2x = 10 years.
Answer: Option C Explanation:Sum of ages is 360 years.
The ratio of children and parents ratio ages is 2:1
Total age of parents is 360*1/3 = 120 years
Ratio of wife and husband age is = 5:7
Therefore age of the husband is = 120*7/12 = 70 years
Hence the husband of the age is = 70 years