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Pam is 10 years older than John. The sum of their ages is 80. What is John's age?

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解答

Pamis10yearsolderthanJohn.Thesumoftheiragesis80.WhatisJohn′sage?

解答

John′sageis:35
求解步骤
Translate the problem into an equation:x+x−10=80
求解 x,x+x−10=80:x=45
找到 John's age:35
John′sageis:35

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