Mr Koh just celebrated his birthday with his family recently. Mr Koh is 9m years old now. He is 3 times as old as his son. How old is Mr Koh when his son is 35 years old?Write your answer in algebraic expression.
Question
Mr Koh just celebrated his birthday with his family recently. Mr Koh is 9m years old now. He is 3 times as old as his son. How old is Mr Koh when his son is 35 years old?Write your answer in algebraic expression.
Solution
Let's denote Mr. Koh's age as K and his son's age as S.
From the problem, we know that:
K = 9m (Mr. Koh's current age) K = 3S (Mr. Koh is 3 times as old as his son)
We want to find out Mr. Koh's age when his son is 35 years old.
We can express this as:
K = 3S + (35 - S)
This equation represents Mr. Koh's age when his son is 35 years old.
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