首页
登录
职称英语
If the average(arithmetic mean)of 7 consecutive numbers is 16, what is the sum o
If the average(arithmetic mean)of 7 consecutive numbers is 16, what is the sum o
游客
2025-02-24
24
管理
问题
If the average(arithmetic mean)of 7 consecutive numbers is 16, what is the sum of the least and greatest of the 7 integers?
选项
A、13
B、14
C、16
D、19
E、32
答案
E
解析
The correct answer is E. To solve this problem, first set the least of the seven values to x. When the least of the seven numbers is x, the remaining numbers are x+1, x+2, x+3, x+4, x+5, and x+6, because the numbers are consecutive. Because the average of the seven numbers is 16, then[x+(x+l)+(x+2)+(x+3)+(x+4)+(x+5)+(x+6)]divided by 7 = 16. Solve for x:
(7x + 21)/7= 16
7x+21 = 112
7x=91
x=13
The smallest number, x, is 13, and the largest number is x+6. Therefore the largest number is equal to 13+6, or 19, and the sum of these two numbers is 13 + 19, or 32.
转载请注明原文地址:https://tihaiku.com/zcyy/3970635.html
相关试题推荐
Iftheaverage(arithmeticmean)of7consecutivenumbersis16,whatisthesumo
Theaverageofasetofsixintegersis3Whenaseventhnumberisincludedinth
Iftheaverage(arithmeticmean)oftwonumbersis16andoneofthenumbersisx,
Theaverageofxandyis16andtheaverageofx,y,andzis2Whatisthevalu
ThelargeroftwonumbersexceedsthreetimesthesmallernumberbyThesumoft
Whentheaverageofalistofcoursegradesismultipliedbythenumberofcours
Alistofnumbershasameanof8andastandarddeviationof2.Ifxisanumber
Ifthefunctiongisdefinedforallnonzeronumbersybyg(y)=[img]2014m9x/ct_e
Thesequenceofnumbersa1,a2,a3,...,an,...isdefinedby[img]2014m9x/ct_egreqj_
In1993theaverage(arithmeticmean)pricepercardforallgreetingcardssoldw
随机试题
Theinterview—about3minutesInthispartinterlocutorasksquestionstoeacho
Dostrongelectriccurrents,bymeansoftheelectromagneticfieldsthataccompa
theinvestorwhoisuncertainaboutthefutureismorelikelytoputmoneyinto
[img]2012q1/ct_etoefm_etoefspeakc_0118_20121[/img]Describethewoman’sprobl
Latelyithasbecomepopulartorejecttheadviceofdrinkingeightglasses
在糖尿病筛检中检测血糖的目的是()A.查出隐性的糖尿病患者 B.查出糖耐量减
急性肝炎时,LD同工酶的特点是A.LD3↑ B.LD1↑ C.LD4↑ D
A.国家基本药物 B.上市药品 C.处方药 D.仿制药品 E.国家基本药
下列关于房地产价格影响的表述中,正确的是()。A.在卖方市场下,增加卖方的
根据《污水综合排放标准》,以下允许在排污单位排放口采样的污染物是( )。A.总
最新回复
(
0
)