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There are three people in Tom’s family.Their total age is 88.Mom is three times
There are three people in Tom’s family.Their total age is 88.Mom is three times
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2024-08-14
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问题
There are three people in Tom’s family.Their total age is 88.Mom is three times as old as Tom.Dad is four years older than Mom.How old is Tom?
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答案
Tom is twelve years old.
解析
汤姆家人总年龄是88。妈妈的年龄是汤姆的三倍。爸爸比妈妈大四岁。汤姆多少岁?根据题意可设汤姆X岁,题目中提到妈妈的年龄是汤姆的三倍,则妈妈的年龄为3X;爸爸比妈妈大四岁,则爸爸的年龄为3X +4;汤姆家人总年龄是88,则可列方程式X+3X +3X +4=88解方程可得X=12,即汤姆12岁。
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