A is 2 years older than B who is twice as old as C.If the total of the age of A ,B and C 27, than how old is B?

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A is 2 years older than B who is twice as old as C.If the total of the age of A ,B and C 27, than how old is B? Answer: 10

Let A=B+2 and B=2C. Then (B+2)+B+C=27⇒2B+C=25. Substituting C=B2 gives 2B+B2=25⇒B=10