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 47, the how old is B?  Choose the correct choice from the following:  A) 10 years  B) 12 years  C) 14 years  D) 18 years  E) 16 years
Let C's age be x years. Then, B's age = 2x years. A's age = (2x + 2) years.   (2x + 2) + 2x + x = 47   5x = 45   x = 9.   Hence, B's age = 2x = 19 years.   18 years)
<result>D</result>
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 47, the how old is B?