36. One year ago, Mrs Promila was four times as old as her daughter Swati. Six years hence, Mrs Promilas age will exceed her daugther’s age by 9 years. The ratio of the present ages of Promila and her daughter is
A.9:2 B.12:5
C.11:3 D.13:4
Answer: 13:4
Explanation: Let Swatis age 1 year ago = x.
Then, Promilas age 1 year ago = 4x.
(4x+6) - (x+6) = 9 or x = 3.
Present age of Promila = (12 + 1) years = 13 years.
Present age of Swati = (3+ 1) years =4 years.
Ratio of their ages = 13 : 4.
