A is two years older than B who is twice as old as C.If the total of the ages of A,B nd C be 27,then how old is B ?
Choose one: A) 7 B) 8 C) 9 D) 10 E) 11
Solution   Let C's age be x years .Then,B's age =2x years.A's age =(2x +2) years.   ∴ (2x +2) +2x + x =27 ⇔ 5x =25 ⇔ x =5.   Hence,B's age =2x = 10 years. Answer 10
<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 nd C be 27,then how old is B ?