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?  Choose the correct choice from the following answers
A) 17 years
B) 20 years
C) 29 years
D) 10 years
E) 12 years
Let C's age be x years.   Then, B's age = 2x years.   A's age = (2x + 2) years.   (2x + 2) + 2x + x = 52   5x = 50 =&gt; x = 10   Hence, B's age = 2x = 20 years.   Answer: 20 years
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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 52, then how old is B?