Aptitude Question On Problems on Ages

 

1. The present ages of three persons are in proportions 4:7:9. Eight years ago, the sum of their ages was 56. Find their present ages (in years)

1. A. 12, 14, 18     

2. B. 14, 20, 36      

3. C. 16, 12, 14      

4. D. 16, 28, 36        👈Correct Answer

2.  

    

   A person's present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old is the mother at present?

1. A. 32 years     

2. B. 36 years      

3. C. 40 years        👈 Correct Answer

4. D. 48 years      

3.  

    

   A demographic survey of 100 families in which two parents were present revealed that the average age A, of the oldest child, is 20 years less than half the sum of the ages of the two parents. If F represents the age of one parent and M, the age of the other parent, then which of the following equivalent to A?

1. A. (F + M - 20/2)     

2. B. (F + M/2) + 20      

3. C. (F + M/2) - 20        👈Correct Answer

4. D. F + M - 10      

4.  

    

   Two groups of student, whose average ages are 20 years and 30 years, combine to form a third group whose average age is 23 years. What is the ratio of the number of students in the first group to the number of students in the second group?

1. A. 5:2     

2. B. 2:5      

3. C. 7:3        👈Correct Answer

4. D. None of these      

5.  

    

   Sister's age is 3 times that of her brother's. After 5 years the sister shall be twice as old as her brother. How many years before, the sister's age was 6 times of her brother's age?

1. A. 1 year     

2. B. 3 years        👈Correct Answer

3. C. 5 years      

4. D. 10 years      

6.  

    

   Namrata's father is now four times her age. In five years, he will be three times her age. In how many years, will he be twice her age?

1. A. 5     

2. B. 20       👈 Correct Answer

3. C. 25      

4. D. 15      

7.  

    

   Ten years ago, the ages of the members of a joint family of eight people added up to 231 years. Three years later, one member died at the age of 60 years and a child was born during the same years. After another three years, one more member died, again at 60, and a child was born during the same years. The current average of this eight-member joint family is nearest to

1. A. 21 years     

2. B. 25 years      

3. C. 24 years        👈Correct Answer

4. D. 23 years      

8.  

    

   The ratio of ages of A and B is 8:9 and the age of B is two-thirds of C's age and age of C is nine-thirteenths time the age of D. If the age of B is 18 years, then the age of C is

1. A. 36 years     

2. B. 39 years      

3. C. 27 years        👈Correct Answer

4. D. 54 years      

9.  

    

   Fifteen years hence, a man will be four times as old as he was fifteen years ago. His present age is

1. A. 25 years       👈Correct Answer

2. B. 20 years      

3. C. 30 years      

4. D. 45 years      

10.  

     

    A's age is one-sixths of B's age will be twice of C's age after 10 years. If C's eighth birthday was celebrated two years ago then the present age of A must be

1. A. 5 years       👈Correct Answer

2. B. 10 years      

3. C. 15 years      

4. D. 20 years      

11.  

     

    Rohan is two years younger than Mohan who is three years younger than Sohan who is four years older than Rohit who is two years older than Mohit who is three years younger than Sohit. Thus

1. A. Sohan is 7 years older than Mohit.     

2. B. Rohit is 2 years younger than Sohit.      

3. C. Mohan is 3 years older than Mohit.       👈 Correct Answer

4. D. Rohit is 2 years older than Sohit.      

12.  

     

    5 years ago his mother's age was thrice that of Amit. Amit's present age is 20. What will be the ratio of their ages 10 years from now?

1. A. 30:70     

2. B. 1:3      

3. C. 5:2      

4. D. 1:2        👈Correct Answer

13.  

     

    A's age is thrice that of B's and four times that of C's. Find A:B:C.

1. A. 1:3:4     

2. B. 3:4:12      

3. C. 2:3:8      

4. D. None of these        👈Correct Answer

14.  

     

    There were 15 students in a class. When the ages of a teacher and a new boy are added, the average age of the class increases by 10 per cent while it remains the same when only the age of a boy is added. If the teacher's age is eight more than twice the age of the new boy, then find the initial average age of the class.

1. A. 15.4 years     

2. B. 16.5 years      

3. C. 11.4 years        👈Correct Answer

4. D. None of these      

15.  

     

    The ratio of ages of Rahul and Deepesh is 3:5. 10 years later this ratio becomes 5:7. What is the present age of Deepesh?

1. A. 20 years     

2. B. 50 years      

3. C. 25 years        👈Correct Answer

4. D. 40 years      

16.  

     

    If Dennis is one-third the age of his father Keith now, and was one-fourth the age of his father 5 years ago, then how old will his father Keith be 5 years from now?

1. A. 20 years     

2. B. 45 years      

3. C. 40 years      

4. D. 50 years        👈Correct Answer

17.  

     

    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?

1. A. 20 years       👈Correct Answer

2. B. 10 years      

3. C. 30 years      

4. D. None of these