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 22, the how old is B?  Options.
A) 7
B) 9
C) 8
D) 11
E) 10
Explanation:   Let C's age be x years. Then, B's age = 2x years. A's age = (2x + 2) years.   (2x + 2) + 2x + x = 22   ⇒ 5x = 20   ⇒ x = 4.   Hence, B's age = 2x = 8 years.   Answer: 8
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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 22, the how old is B?