食堂买来8千克黄瓜和6千克茄子,共付出39元.每千克茄子2.5元,每千克黄瓜多少元?
人气:154 ℃ 时间:2020-04-03 12:53:14
解答
方案一:算术方法
先求出黄瓜的总价:39-2.5x6=24元
再求出黄瓜的单价:24÷8=3元
方案二:方程求
设每千克黄瓜x元.
8x+2.5x6=39
x=3
推荐
- 食堂买来黄瓜和茄子各28千克,共花92.4元,每千克茄子多少元?(黄瓜1.5元/千克)(用方程解)
- 食堂买了黄瓜和茄子个8千克,付出15元,找回1.4元,每千克黄瓜是0.8元,每千克茄子是多少钱/非常紧急,
- 食堂买了8千克黄瓜和6千克茄子,共付50元,找回7.4元.每千克黄瓜2.4元,每千克茄子多少元?(用方程解)
- 食堂买了8千克黄瓜和6千克茄子共付15元,找回1.4元每千克黄瓜0.8元,每千克茄子多少元?
- 学校食堂运来茄子和黄瓜共300千克,黄瓜的数量是茄子的3倍,黄瓜和茄子各有多少千克?
- lt took him three years to travel around the country.(对划线部分提问,划three years)
- 找10个易用错的成语
- 流星体.流星现象,.陨星中属于天体的有哪些?
猜你喜欢
- Thanks for your ____(invite),Lucy.
- the details about the difference between American football and soccer
- 已知多项式2x的平方+5x+k分解因式后,有一个因式是x+4,则实数k的值为?
- No matter how I tried to read it,the sentence didn't make sense.
- 已知向量OA=(3,0,1),向量OB=(-1,1,2),向量OC⊥向量OA,向量BC‖向量OA,求向量OC的坐标
- They are swimming in the pool now改为一般现在时
- He wants to go to a movie.(写同义句)
- x+y=3,则3/2 2x 2y=