Problems on Ages Questions Answers

8. The ages of two persons differ by 16 years. 6 years ago, the elder one was 3 times as old as the younger one. What are their present ages of the elder person
 15
 20
 25
 30
Answer And Explanation
Answer: Option D
Explanation:
Let's take the present age of the elder person = x
and the present age of the younger person = x – 16
(x – 6) = 3 (x166)
=> x – 6 = 3x – 66
=> 2x = 60
=> x = 60/2 = 30 
9. The ages of two persons differ by 20 years. If 5 years ago, the elder one be 5 times as old as the younger one, their present ages (in years) are respectively
 20,20
 20,10
 25,15
 30,10
Answer And Explanation
Answer: Option D
Explanation:
Let their ages be x and (x + 20) years.
5 (x  5) = (x + 20  5) or 4x = 40 or x = 10.
Their present ages are 30 years and 10 years 
10. Ratio between Rahul and Deepak is 4:3, After 6 Years Rahul age will be 26 years. What is Deepak present age.
 14
 15
 20
 22
Answer And Explanation
Answer: Option B
Explanation:
Present age is 4x and 3x,
=> 4x + 6 = 26 => x = 5
So Deepak age is = 3(5) = 15 
11. Sachin was twice as old as Ajay 10 years back. How old is Ajay today if Sachin will be 40 years old 10 years hence
 18
 25
 15
 20
Answer And Explanation
Answer: Option D
Explanation:
Sachin's age today = 30 years.
Sachin's age 10 years back = 20 years.
Ajay's age 10 years back = 10 years.
Ajay's age today =20 years 
12. In 10 years, A will be twice as old5as B was 10 years ago. If A is now 9 years older than B, the present age of B is
 35
 37
 39
 41
Answer And Explanation
Answer: Option C
Explanation:
Let B's age = x years.
Then, As age = (x+ 9) years.
(x+9+10)=2(x—10)
hence x=39.
Present age of B = 39 years 
13. Ten years ago A was half of B in age. If the ratio of their present ages is 3 : 4, what will be the total of their present ages
 30
 35
 37
 41
Answer And Explanation
Answer: Option B
Explanation:
Let A's age 10 years ago = x years.
Then, B's age 10 years ago = 2x years.
(x + 10) / (2x+ lO) = 3/4
=> x = 5.
So, the total of their present ages =(x + 10 + 2x + 10)
= (3x + 20) = 35 years. 
14. Sushil was thrice as old as Snehal 6 years back. Sushil will be times as old as Snehal 6 years hence. How old is Snehal today
 12
 16
 18
 24
Answer And Explanation
Answer: Option A
Explanation:
Let Snehals age 6 years back = x.
Then, Sushils age 6 years back = 3x.
(5/3) * (X + 6 + 6) = (3X + 6 + 6)
So 5(x+ 12) = 3(3x+ 12),
so x=6.
Snehal Age = (x+ 6) years = 12 years