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James is 5 years younger than his sister. The sum of their ages is 25. Write a system of equation to model the situation. How old is he?
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James is 5 years younger than his sister. The sum of their ages is 25. Write a system of equation to model the situation. How old is he?

User LukeS
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1 Answer

5 votes

Answer:15


Step-by-step explanation:So Adam is 20 years old, and Neil is 5 years younger so is 20 - 5 = 15 years old. The ratio of Adam's age to Neil's age is 20:15, or 4:3.


User Andrew Christianson
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