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general knowledge Online Quiz - 5410
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Today is Jack's 12th birthday and his father's 40th birthday.How many years from today will jack,s father be twice as old as Jack is at that time?
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A
16
💡 Explanation:
Let Jack's current age = 12, father's current age = 40. In x years, Jack will be 12+x and father will be 40+x. We need 40+x = 2(12+x), so 40+x = 24+2x, therefore x = 16. After 16 years, Jack will be 28 and father will be 56, which is exactly double.