首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The top surface area of a square tabletop was changed so that one of the dimensions was reduced by 1 inch and the other dimensio
The top surface area of a square tabletop was changed so that one of the dimensions was reduced by 1 inch and the other dimensio
admin
2022-10-18
33
问题
The top surface area of a square tabletop was changed so that one of the dimensions was reduced by 1 inch and the other dimension was increased by 2 inches. What was the surface area before these changes were made?
(1) After the changes were made, the surface area was 70 square inches.
(2) There was a 25 percent increase in one of the dimensions.
选项
A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B、Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C、BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient.
E、Statements (1) and (2) TOGETHER are NOT sufficient.
答案
D
解析
Letting S be the side length of the square tabletop, the surface area before the change was S
2
, and the area after the change is (S - 1)(S + 2). Determine S
2
.
(1) It is given that (S - 1)(5 + 2) = 70. Solving this equation gives S = -9 and 5=8. Discarding S = -9, it follows that 5=8 and the surface area before the changes was 64 square inches; SUFFICIENT.
(2) Since only one dimension was increased and that increase was 2 inches, it follows from (2) that S + 2 = 1.25S. Solving this equation gives 5=8. Therefore, the surface area before the changes was 64 square inches; SUFFICIENT.
The correct answer is D;
each statement alone is sufficient.
转载请注明原文地址:https://kaotiyun.com/show/VttO777K
本试题收录于:
GMAT QUANTITATIVE题库GMAT分类
0
GMAT QUANTITATIVE
GMAT
相关试题推荐
Steve:Francesca,what’syourfavouritepieceofmusic,wouldyousay?Francesca:Ithinkit’s"PieJesu"byAndrewLloyd-We
Whatdowemeanbyasatisfactorystandardofliving?Obviously,itmustincludethebasicnecessitiesoflifesuchasfood,clo
WhatdowemeanbyaperfectEnglishpronunciation?Inone【C1】______therearemanydifferentkindsofEnglishastherearespeak
Whatdowemeanbyasatisfactorystandardofliving?Obviously,itmustincludethebasicnecessitiesoflifesuchasfood,clo
TheannualcampaigntomakeSingapore’sthreemillionpeoplemorepoliteendedyesterdayandwasimmediatelyfollowedbyanother
Atransplantoperationissuccessfulonlyifdoctorscanpreventthebodyfromrejectingthe______organ.
ItusedtodistresslargenumbersofEasternpeopleswholivedmainlyonrice.
Whatexactlyisalie?Isitanythingwesaywhichweknowisuntrue?Orisitsomethingmorethanthat?Forexample,supposea
Frankfurt,Germany,isoneofthemost______populatedregionsinWesternEurope.
AlthoughmanybrandsofgasolinearesoldonHaibeiisland,gasolinecompaniestheregetalloftherefinedgasolinetheysellf
随机试题
胸外心脏挤压时,应使胸骨下陷
A.川芎茶调散B.羌活胜湿汤C.天麻钩藤饮D.半夏白术天麻汤治疗痰浊头痛病,宜选
A.结核菌抑菌剂B.结核菌全杀菌剂C.结核菌半杀菌剂D.对结核菌无影响E.对末梢神经有损害利福平
患者,男,41岁。十二指肠溃疡史,除有空腹痛进食后缓解外,突然发生呕吐,所吐物为昨天吃的食物。引发原因是
乌梅丸的君药是
患者女,20岁,查体:血红蛋白90g/L,细胞体积小,血清铁明显下降,诊断为缺铁性贫血。下列哪项不符合缺铁性贫血的临床表现
从事货物生产、年应税销售额超50万元的小规模纳税人,不可以被认定为一般纳税人。()
你负责单位的信访接待工作,上班第一周就被群众投诉。领导为此批评了你,你会怎么办?
司马紫衣突然很沮丧地发现,自己并不是一个自信的人。哪种理论最适合解释司马紫衣自我意识的发展?()。
Itisan______whichmaybebrown,greenorblackincolour.
最新回复
(
0
)