A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 52, then how old is B?
Options.
A) 17 years
B) 20 years
C) 29 years
D) 10 years
E) 12 years

Rationale: "let c ' s age be x years . then , b ' s age = 2 x years . a ' s age = ( 2 x + 2 ) years . ( 2 x + 2 ) + 2 x + x = 52 5 x = 50 = > x = 10 hence , b ' s age = 2 x = 20 years . answer : b"
Answer: B