Verbal Reasoning - Arithmetic Reasoning - Discussion

Discussion :: Arithmetic Reasoning - Section 1 (Q.No.38)

38. 

When Rahul was born, his father was 32 years older than his brother and his mother was 25 years older than his sister. If Rahul's brother is 6 years older than him and his mother is 3 years younger than his father, how old was Rahul's sister when he was born ?

[A]. 7 years
[B]. 10 years
[C]. 14 years
[D]. 19 years

Answer: Option B

Explanation:

When Rahul was born, his brother's age = 6 years; his father's age = (6 + 32) years = 38 years, his mother's age = (38 - 3) years = 35 years; his sister's age = (35 - 25) years = 10 years.


Imran Ali said: (Sep 17, 2014)  
1st we see what is require.

Rahul's sister age =?

Given,

Rahul's brother age = 6.

Rahul's father is 32 years older than his brother. Hence,
6+32=38 is Rahul's father age.

Rahuls mother is 3 years younger than his father. Hence,
38-3 is Rahul's mother age,

Now,

Rahul's sister age = 35-25 =10.

Hence Rahul's sister age is 10 years.

Thanks.

Imran Ali said: (Oct 18, 2014)  
Step one:

Rahul Sister Age = S.

Given,

F = 32+B ------ 1.
M = 25+S ------ 2.
F = M+3 -------- 3.
B = 6 -------- 4.

Put value of B from 4 in 1, we get.
F = 38.

Put F in 3, We get M.
M= 35.

Put value of M in 2 we get.
S = 10.

I hope now it is clear.

Sohag said: (Mar 7, 2017)  
Let.

Rahul was x. so his father x + 32.
Sister was y, so her mother y + 25.
Now, x+32-y-25 = 3.
=> x-y = 10 answer.

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