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Let, Steve is x years old

∴ John is (x + 20) years old.

In 10 years, Steve will be (x + 10) years

∴ln 10 years, John will be (x + 20 + 10) = (x + 30) years According to question

(x+10)=12(x+30) =2x + 20 = x + 30

∴x=10 Answer: Steve is 10 years old.

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