Question
Present age of 'X' is 60% more than that of 'Y'. Present
age of 'Z', who is 5 years older than 'Y', is 25 years. After how many years from now, ratio of ages of 'X' to 'Y' will become 7:5.Solution
ATQ, Present age of 'Y' = 25 – 5 = 20 years
Present age of 'X' = 1.6 × 20 = 32 years
Let the required time be 'T' years.
So, (32 + T) : (20 + T) = 7 : 5
Or, 5 × (32 + T) = 7 × (20 + T)
Or, 160 + 5T = 140 + 7T
Or, 2T = 20
Or, 'T' = 10 years
- The ratio of present ages of Aman to that of Dinesh is 2:3 while the ratio of present ages of Rohan to that of Dinesh is 5:3. If the age of Rohan, 4 years ...
5 years ago, A was 1/3 of B’s age. If the ratio of their present ages is 2:5, what will be the sum of their present ages?
Present ages of P and Q are in the ratio 4:7 respectively. If Q’s age, 15 years hence from now will be 6 times of P’s age, 6 years ago from now, the...
The present age of P is 20% more than that of Q. P is 6.5 years older than R. Twelve years from now, S will be 9 years older than R. If the present aver...
The respective ages of a mother and her daughter are 30 and 8 years. In how many years will the mother be thrice as old as her daughter?
The ratio of the present ages of father and his son is 9:5. The product of their ages 3 years ago was 33 times of his son’s age that year. What wa...
- The ratio of the ages of a teacher and a student is 5:2, respectively. If the difference between their ages is 18 years, then find the age of the student.
Present age of Sunita is 3 times the present age of Nita. 4 years hence twice the age of Sunita will be equal to thrice the age of Nita. Find the prese...
The current average age of 'Akhil', 'Bittu', and 'Chinu' is 42 years. 'Bittu's' age is 25% greater than 'Akhil's'. Twelve years from now, the age ratio ...
The ratio of A and B present age is 5:3. The product of their ages is 1500. What will be the ratio of their ages after 2 years?
