Quantitative Aptitude: Problems on Ages Set 11

1. The present age of Sriram is twice that of his brother. Five years hence the ratio of their ages will be 21:13. What is the present age of his brother ?
   7 years
   8 years
   6 years
   9 years
   5 years
   Option B
   2x+5/x+5 = 21/13
   26x+65 = 21x+105
   5x=40
   x = 8 years
   
   
    



2. The sum of the age of Father and his daughter is 62 years. After 5 years, the age of father will be five times that of the son. What is the age of the Son ?
   3 years
   9 years
   4 years
   7 years
   5 years
   Option D
   Son = 62-5(5-1)/5+1 = 62-20/6 = 42/6 = 7 years
   
    



3. One year back, Ria was six times as old as her daughter. Six years hence, Ria’s age will exceed her daughter’s age by 15 years. The ratio of the present ages of Ria and her daughter is?
   13 : 5
   10 : 7
   17 : 13
   10 : 17
   19 : 4
   Option E
   Ages of Ria and her daughter = 6x, x
   [6x + 1 + 6] – [x + 1 + 6] = 15
   5x = 15; x = 3
   Ratio = 6x + 1 : x + 1 = 19 : 4
   
   
    



4. Suresh age is 125% of what it was ten years ago, but 250/3% of what it will be after ten years. What is the present age of Suresh?
   10 years
   20 years
   50 years
   30 years
   40 years
   Option C
   Suresh’s age before 10 years = x
   125x/100 = x + 10
   125x = 100x + 1000
   => x = 40
   Present age = x + 10 = 50 years
   
   
    



5. Sanjay’ father was 30 years old when he was born. His mother’s age was 24 when his sister who is 5 years younger to him, was born. What is the difference between the age of Sanjay father and mother?
   14 years
   11 years
   13 years
   10 years
   12 years
   Option B
   Sanjay’age = F – 30
   Sister’s age = F – 35
   M = 24 + Sister’s age
   M = 24 + F – 35
   F – M = 11 years
   
   
    



6. Amar got married 6 years ago. His present age is 5/4 times his age at the time of his marriage. Amar’s brother was 5 years younger to him at the time of his marriage. What is the present age of Amar’s brother?
   24 years
   25 years
   21 years
   22 years
   20 years
   Option B
   Present age of Amar = x
   Present age of Amar’s sister = y
   x = (x-6)(5/4)
   x = 30
   Present age of Amar’s brother = 30 – 5 = 25 years
   
   
    



7. The respective ratio between the present age of Manu and Mina is 5:x. Manu is 9 years younger than Pooja. Pooja’s age after 9 years will be 33 years. The difference between Mina’s and Manu’s age is same as the present age of Pooja. What is the value of x?
   13 years
   11 years
   12 years
   10 years
   14 years
   Option A
   Poooja’s age after 9 years = 33 years
   Pooja’s present age = 33 – 9 = 24 years
   Manu’s present age = 24 – 9 = 15 years
   Mina’s present age = 15 + 24 = 39 years
   Ratio between Manu and Mina = 15 : 39 = 5 : 13
   x = 13 years
   
   
    



8. Average age of a group of 32 students is 26 years. If a teacher is included then the average age rises by 1 year,what is the present age of teacher?
   38 years
   40 years
   44 years
   59 years
   50 years
   Option D
   Students total age = 32*26 = 832
   Students & Teacher total age = 33*27 = 891
   Teacher = 891-832 = 59 years
   
   
    



9. The ages of A and B are in the ratio of 8 : 5 respectively. After 5 years the ratio of their ages will be 7:5. What is the difference in years between their ages.
   7 years
   3 years
   6 years
   2 years
   4 years
   Option C
   A:B
   = 8:5
   => 16:10
   After 5 years
   21:15 = 7:5
   16-10 = 6 years
   
   
    



10. Karan’s present age is one fourth of his father’s age two years ago. Karan’s father’s age will be twice Ram’s age after 10 years. If Ram’s 12th birthday was celebrated 2 years ago, then what is Karan’s present age ?
    6 years
    7 years
    9 years
    8 years
    5 years
    Option C
    Ram = 12+2 = 14
    Karan’s father = X+10 =2(10+14)
    X = 48-10 = 38
    John = 36/4 = 9 years