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
2025-02-27
8
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/3974731.html
相关试题推荐
KingSchoolhasanenrollmentof900students.Theschooldayconsistsof6clas
Thenewschoolofpoliticalhistorythatemergedinthe1960’sand1970’sso
Schoolsexpecttextbookstobeavaluablesourceofinformationforstudents
Schoolsexpecttextbookstobeavaluablesourceofinformationforstudents
Thedirectorofasecondaryschoolwheremanystudentswerehavingsevereacadem
Inarecentexperiment,ahighschoolEnglishteacherinterspersedreal,commonl
Ifthereisanoil-supplydisruptionresultinginhigherinternationaloilprice
Ifthereisanoil-supplydisruptionresultinginhigherinternationaloilprice
Inthe1970’stherewasanoversupplyofcollegegraduates.Theoversupplycause
Aftergraduatingformhighschool,peoplerarelymultiplyfractionsordiscussa
随机试题
Somehousesaredesignedtobesmart.Othershavesmartdesigns.Anexample
Ascientistwhowantstopredictthewayinwhichconsumerswillspendthei
Canyouimaginethattheapparently______mandosuchnastythings?A、respective
SydneyOperaHousemustbeoneofthemostrecognizableimagesofthemodem
1989年10月4日21时,韩国ABS树脂加工厂发生火灾爆炸事故,造成14人死亡
下列哪项可引起神经精神性呼吸困难A.糖尿病酮症酸中毒 B.脑出血 C.有机磷
“学为文士”是()的教育目标。A.古希腊 B.古罗马 C.古印度 D.古埃
商品住宅的业主,非住宅的业主按照所拥有的物业的建筑面积交存住宅专项维修资金,每平
属于血管紧张素Ⅱ受体拮抗剂的是( )。A.维拉帕米 B.美托洛尔 C.卡托
下列各项中,不通过“税金及附加”科目核算的有()。A.委托加工物资由受托方
最新回复
(
0
)