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Primary 3 | Maths
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please help with this question
Date Posted: 7 years ago
Views: 499
You can use algebra. In this case, you let John's age 5 years ago be x. To find their total age 5 years ago, you take 66-(5*2)=56. So their total age 5 years ago is (3x+x)=56. From there, 4x=56 so x=14.
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Difference in age remain unchanged throughout two person.
Date Posted:
7 years ago
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