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Practice Questions
Note: You can add tough questions into your favourite list for second revision. 
The sum of the ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child ?  
A.  4 years [Correct Answer] 
B.  8 years [Wrong Answer] 
C.  10 years [Wrong Answer] 
D.  None of these [Wrong Answer] 
View Answer
Explanation:
Answer : A Discuss it below :Let the ages of the children be: x, (x + 3), (x + 6), (x + 9) and (x + 12) years. Then, x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 50 <=> 5x = 20 <=> x = 4. ∴ Age of the youngest child = x = 4 years. Click here for more comments 
Q is as much younger than R as he is older than T. If the sum of the ages of R and T is 50 years, what is definitely the difference between R and Q's age ?  
A.  1 year [Wrong Answer] 
B.  2 years [Wrong Answer] 
C.  25 years [Wrong Answer] 
D.  Data inadequate [Correct Answer] 
View Answer

The sum of the present ages of a father and his son is 60 years. Six years ago, father's age was five times the age of the son. After 6 years, son's age will be :  
A.  12 years [Wrong Answer] 
B.  14 years [Wrong Answer] 
C.  18 years [Wrong Answer] 
D.  20 years [Correct Answer] 
View Answer
Explanation:
Answer : D Discuss it below :Let the present ages of on and father be x and (60  x) years respectively. Then, (60  x)  6 = 5 (x  6) <=> 54  x = 5x  30 <=> 6x = 84 <=> x = 14. ∴ Son's age after 6 years = (x + 6) = 20 years. Click here for more comments 
The age of father 10 years ago was thrice the age of his son. Ten years hence, father's age will be twice that of his son. The ratio of their present ages is ?  
A.  5 : 2 [Wrong Answer] 
B.  7 : 3 [Correct Answer] 
C.  9 : 2 [Wrong Answer] 
D.  13 : 4 [Wrong Answer] 
View Answer
Explanation:
Answer : B Discuss it below :Let the ages of father and son 10 years ago be 3x and x years respectively. Then, (3x + 10) + 10 = 2 [(x + 10) + 10] <=> 3x + 20 = 2x + 40 <=> x = 20. ∴ Required ratio = (3x + 10) : (x + 10) = 70 : 30 = 7 : 3. Click here for more comments 
The total age of A and B is 12 years more than the total age of B and C. C is how many years younger than A?  
A.  12 [Correct Answer] 
B.  24 [Wrong Answer] 
C.  C is elder than A [Wrong Answer] 
D.  Data inadequate [Wrong Answer] 
View Answer
Explanation:
Answer : A Discuss it below : Sahil Said on 20161115 05:13:08 . Sahil Said on 20161115 05:12:46 A = C+12 (Correction in the above mentioned answer) Sahil Said on 20161115 05:11:57 A+B = B+C+12 ('B' on both sides with same sign gets cancelled) A = C=12 Therefore, A's age is equal to C's age + 12 yrs Hence, C is 12 yrs younger than A Click here for more comments 
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