Age puzzle

When asked how old he is, John answered: "In 12 years, I will be four times as old as I was 12 years ago." How old is John?

Final Answer:

x =  20

Step-by-step explanation:


x+12 = 4·(x-12)

3x = 60


x = 60/3 = 20

x = 20

Our simple equation calculator calculates it.



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You need to know the following knowledge to solve this word math problem:

algebraUnits of physical quantitiesGrade of the word problem

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