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, then how old is B? Select the correct option
A) 17 years B) 19 years C) 18 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 = 47   5x = 45 =&gt; x = 9   Hence, B's age = 2x = 18 years.   Answer: 18 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 47, then how old is B?