13问答网 > 爸妈和小红买门票共用108.5元,一张大人票与三张儿童票相等，一张大人票多钱？

爸妈和小红买门票共用108.5元,一张大人票与三张儿童票相等，一张大人票多钱？

2025-02-26 06:29:42

推荐回答（5个）

回答1：

一张大人票46.5元。

设一张儿童票X元，

一张大人票与三张儿童票相等，

那么一张大人票是3X元，

爸妈和小红买门票共用108.5元，列式可得：

X+2*3X=108.5

解此方程式得：X=15.5

那么3X=15.5*3=46.5

所以一张大人票46.5元。

扩展资料：

此类问题属于数学中典型的和倍问题。

简单的题目直接利用公式，复杂的题目变通后利用公式计算：

1、两数和÷份数和=小数

2、小数×倍数=大数

3、两数和－小数=大数

也可以运用一元一次方程进行解题。

解一元一次方程有五步，即去分母、去括号、移项、合并同类项、系数化为1，所有步骤都根据整式和等式的性质进行。

以解方程

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为例：

去分母，得：

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去括号，得：

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移项，得：

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合并同类项，得：（常简写为“合并，得：”）

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系数化为1，得：

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回答2：