Ann had $100.She used part of her money to buy 7 ceramic cats,in which 3 of them are more expensive than the rest by $3.If she had $7 left,how much do the two types of ceramic cat cost?
人气:429 ℃ 时间:2020-03-25 20:08:01
解答
有100美元,买了七只猫,其中3只比另外4只每只贵3美元,最后剩下七美元.
如果假设四只便宜的每只x元,
令3*(x+3)+4*x=100-3
则x=12 x+3=15
推荐
- Ann had $100.She used part of her money to buy 7 ceramic cats,in which 3 of them are more expensive than the rest by $3.
- 1.由2点到7点半,时钟的时针转过的角度是()度
- 1、为了美化校园,希望中学欲在教学楼前建一圆形花坛.如果想使花坛的面积为6.28平方米,那么花坛的半径应为多少(π取3.14)?
- an equation of the line tangent to the graph of f(x)=x(1-2x)^3 at the point (1,-1) is?
- 1.I usually come to school by subwaty.(同义句)
- 一根40厘米的绳子,第一次用去1/10,第二次用去1/5,还剩多少?
- 若CD是直角三角形ABC斜边AB上的高,且AD=9,BD=16,则AC=?BC=?CD=?
- the head waiter showed him to his table ,took his order and went away
猜你喜欢