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Five years ago, John's age was half of the age he will be in 8 years. How old is he now?
let 'x' be John's age at present since it was stated that five years ago is half of his age 8 years from now then you'll have the equation as: twice John's age five years ago is equal to his age eight years from now 2(x-5) = x + 8 2x - 10 = x + 8 2x - x = 8 + 10 x = 18 therefore John's age at present is 18yrs old
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