Question

Shan is 55 years old, Sthian is 5 years junior to Shan and 6 years senior to Balan. The youngest brother of Balan is Devan and he is & years junior to him. So what is the age difference between Devan and Shan ?
A.15 years
B.18 years
C.13 years
D.7 years

Answer 1

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Shan is 55 years old, Sthian is 5 years junior to Shan and 6 years senior to Balan. The youngest brother of Balan is Devan and he is & years junior to him. So what is the age difference between Devan and Shan ?
A.15 years
B.18 years
C.13 years
D.7 years

$\huge\underline{\green {\textbf{B.18 years}}}$

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Answer 2

The age difference between Devan and Shan is 18 years. hence option (B) is correct choice.

Shan is 55 years old, Sthian is 5 years junior to Shan and 6 years senior to Balan. The youngest brother of Balan is Devan and he is 7 years junior to him.

We have to find the age difference between Devan and Shan.

∵ Sthian is 5 years junior to Shan.

∴ The age of Sthian = 55 - 5 = 50 years

Also Sthian is 6 years senior to Balan.

∴ The age of Balan = 50 - 6 = 44 years.

Devan is Balan's youngest brother and he is 7 years junior to him.

∴ The age of Devan = 44 - 7 = 37 years.

∴ The age difference between Devan and Shan = age of Shan - age of Balan

= 55 - 37

= 18 years

Therefore the age difference between Devan and Shan is 18 years. hence option (B) is correct choice.