Father and sons

Father is 27, and his sons are two and one years. In how many years will his sons sum up to half his age?

Correct answer:

x =  7

Step-by-step explanation:

(2+x)+(1+x)=227+x  (2+x)+(1+x)=(27+x)/2  3x=21  x=321=7  x=7



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