Reasoning Quiz No.200 Choose the word which is different from the rest.

Question: A is three times as old as B. C was twice-as old as A four years ago. In four years’ time, A will be 31. What are the present ages of B and C ?
[A].

9, 46

[B].

9, 50

[C].

10, 46

[D].

10, 50

Answer: Option B

Explanation:

We have : A = 3B …(i) and

C – 4 = 2 (A – 4) …(ii)

Also, A + 4 = 31 or A= 31-4 = 27.

Putting A = 27 in (i), we get: B = 9.

Putting A = 27 in (ii), we get C = 50.

Question: Ayush was born two years after his father’s marriage. His mother is five years younger than his father but 20 years older than Ayush who is 10 years old. At what age did the father get married ?
[A].

23 years

[B].

25 years

[C].

33 years

[D].

35 years

Answer: Option A

Explanation:

Ayush’s present age = 10 years.

His mother’s present age = (10 + 20) years = 30 years.

Ayush’s father’s present age = (30 + 5) years = 35 years.

Ayush’s father’s age at the time of Ayush’s birth = (35 – 10) years = 25 years.

Therefore Ayush’s father’s age at the time of marriage = (25 – 2) years = 23 years.