首页
登录
职称英语
A school supply store sells only one kind of desk and one kind of chair,at a uni
A school supply store sells only one kind of desk and one kind of chair,at a uni
游客
2024-01-13
29
管理
问题
A school supply store sells only one kind of desk and one kind of chair,at a uniform cost per desk or per that of 1 desk and 3 chairs.then the total cost Of 4 desks and 1 chair is how many times that of 1 desk and 4 chairs?
选项
A、5
B、3
C、8/3
D、5/2
E、7/3
答案
E
解析
Let d represent the cost of 1 desk and let c represent the cost of 1 chair. It is given that 3d + c = 2(d + 3c). It follows that d = 5c. Then 4d+ c = 21c and d+ Ac = 9c. Since 21c/9c= 7/3, the total cost of 4 desks and 1 chair is 7/3 times that of 1 desk and 4 chairs.
The correct answer is E.
转载请注明原文地址:https://tihaiku.com/zcyy/3360169.html
相关试题推荐
W:Ray,aren’tyougoingstraighthomeafterschooltoday?M:______A、Yes,Iwo
Theyoungman______visitedourschoolthismorningisMaria’sbrother.A、whoB、w
Dr.JamesBarrywasthefirstwomaninEnglandtogotomedicalschool.When
Dr.JamesBarrywasthefirstwomaninEnglandtogotomedicalschool.When
Dr.JamesBarrywasthefirstwomaninEnglandtogotomedicalschool.When
Thenumberofprimaryschoolsintheruralareas______doublinginthepast50ye
Thedramaschool______placestostudentswhocanshowtalent.A、donatesB、offers
Thisspecialschoolacceptsalldisabledstudents,______educationalleveland
Thegirlwasnothappyatthenewschoolbecauseshehad______friendsthere.A、fe
—Whatmadehimsohappy?—______asthemodelstudentinschool.A、Hebeingelect
随机试题
Howwelookandhowweappeartoothersprobablyworriesusmorewhenweare
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
用边长为120cm的正方形铁皮做一个无盖水箱,先在四角分别截去一个边长相等的小正
关于建设工程勘察设计文件,下列当事人的做法正确的是( )。 Ⅰ.建设单位、施
以下哪项不是绝热材料?()A.软木 B.挤塑聚苯板 C.泡沫玻璃 D.
所示结构在外力作用下,不产生内力的杆件是( )。 A.AB B.BC C
下列各项中,属于全国人民代表大会常务委员会通过的税收法律有()。A.《中华人民
中药半浸膏片制备时,适合作为粉料的处方饮片是A.含淀粉较多的饮片 B.用量极少
导致全口义齿基托折裂或折断的原因是A.由于牙槽嵴的吸收,基托组织面与组织间不密合
目前,规定施工企业项目经理应由取得()资质的人员担任。A.造价师 B.安全师
最新回复
(
0
)