Johe receive $300 every week as a salary.If one week out of two weeks he keeps one third of it and the rest of the time he keeps one half of it,how many weeks well it take to save a total of $1500?
人气:293 ℃ 时间:2019-10-23 07:18:42
解答
题意应该是这样的:约翰每周周薪是$300,如果两周中的一周他能剩下1/3,其余的时间剩下1/2,那么几周后他能储存下$1500?
解一:
所以就应是他每两周存下300×1/3+300×1/2=250的钱,1500÷250=6个两周,所以应是6×2=12周
解二:
1500÷(300×1/3+300×1/2)×2=12周
推荐
猜你喜欢
- 1北京和广州两地自转角速度比较正确的是( )
- 关于x的方程 2x-4=3m与方程x+3=m的解的绝对值相等则m=_.
- Ab两地相距20km,相向2h相遇,后;A向A的返回,B向A地前进,B到A地还有2km,
- 114.I heard he _______ the piano in the room last night.
- 一辆客车从甲地到乙地每小时行驶40千米,从乙地返往甲地每小时行驶60千米,求返往的平均速度
- Coming into the room,I found them ______ at the table,_______ chess.
- 正比例函数y1=k1x与反比例函数y2=k2x(x≠0)在同一平面直角坐标系中的图象如图所示,则当y1>y2时x的取值范围是_.
- 朋友,如果你们有九年级上英语课程基础训练答案,请把Unit2 Topic1 SectionD