GMAT Changed on April 16th - Read about the latest changes here

It is currently 21 Apr 2018, 19:40

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

W1, W2 are two rectangular tanks. Is lateral surface area of W1 > W2?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

DS Forum Moderator
avatar
G
Joined: 22 Aug 2013
Posts: 1021
Location: India
Premium Member CAT Tests
W1, W2 are two rectangular tanks. Is lateral surface area of W1 > W2? [#permalink]

Show Tags

New post 14 Mar 2018, 23:06
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

60% (00:58) correct 40% (01:18) wrong based on 47 sessions

HideShow timer Statistics

W1, W2 are two rectangular tanks. Is the lateral surface area of W1 greater than that of W2?

(1) Height of tank W1 is equal to that of W2.

(2) W1 has a square base. Area of base of W1 is same as the area of base of W2.
[Reveal] Spoiler: OA
Manager
Manager
User avatar
G
Joined: 16 Sep 2016
Posts: 207
WE: Analyst (Health Care)
Re: W1, W2 are two rectangular tanks. Is lateral surface area of W1 > W2? [#permalink]

Show Tags

New post 15 Mar 2018, 05:48
amanvermagmat wrote:
W1, W2 are two rectangular tanks. Is the curved surface area of W1 greater than that of W2?

(1) Height of tank W1 is equal to that of W2.

(2) W1 has a square base. Area of base of W1 is same as the area of base of W2.


IMO D.

W1 and W2 are rectangular tanks so they have a height, width and depth. Essentially they do not have curved surfaces!

Hence Curved surface of W1 = 0 = curved surface of W2.

Either of Statements are sufficient to answer the prompt.

This seems to me the only viable explanation to this question :-)

Please give kudos if you agree with my explanation ...
Intern
Intern
avatar
B
Joined: 11 Dec 2017
Posts: 2
GMAT ToolKit User
Re: W1, W2 are two rectangular tanks. Is lateral surface area of W1 > W2? [#permalink]

Show Tags

New post 23 Mar 2018, 11:44
I think you mean Lateral Surface Area - cuboid and cubes do not have curved surface area. Anyway, are you sure the answer is C?




amanvermagmat wrote:
Gladiator59 wrote:
amanvermagmat wrote:
W1, W2 are two rectangular tanks. Is the curved surface area of W1 greater than that of W2?

(1) Height of tank W1 is equal to that of W2.

(2) W1 has a square base. Area of base of W1 is same as the area of base of W2.


IMO D.

W1 and W2 are rectangular tanks so they have a height, width and depth. Essentially they do not have curved surfaces!

Hence Curved surface of W1 = 0 = curved surface of W2.

Either of Statements are sufficient to answer the prompt.

This seems to me the only viable explanation to this question :-)

Please give kudos if you agree with my explanation ...


Hello

By 'Curved Surface Area' I meant 'lateral surface area', i,e, area without the two bases.

In India we call it Curved Surface Area, but maybe in GMAT its called something else. If I come to know something like that I will edit the question, please let me know
1 KUDOS received
PS Forum Moderator
avatar
D
Joined: 25 Feb 2013
Posts: 1051
Location: India
GPA: 3.82
GMAT ToolKit User Premium Member Reviews Badge CAT Tests
Re: W1, W2 are two rectangular tanks. Is lateral surface area of W1 > W2? [#permalink]

Show Tags

New post 23 Mar 2018, 12:04
1
This post received
KUDOS
Jayath wrote:
I think you mean Lateral Surface Area - cuboid and cubes do not have curved surface area. Anyway, are you sure the answer is C?


Hi Jayath

The answer will be C

The lateral surface area of a cuboid is \(2h(l+b)\)

Statement 1: says height of both the tanks is same, and

Statement 2: says that the base is a square, implying that \(l=b\)

Combining 1 & 2: Hence lateral surface area of either tank will be \(2h(l+l)=4hl\). Hence both are equal. Sufficient
DS Forum Moderator
avatar
G
Joined: 22 Aug 2013
Posts: 1021
Location: India
Premium Member CAT Tests
Re: W1, W2 are two rectangular tanks. Is lateral surface area of W1 > W2? [#permalink]

Show Tags

New post 23 Mar 2018, 19:27
Gladiator59 wrote:
amanvermagmat wrote:
W1, W2 are two rectangular tanks. Is the curved surface area of W1 greater than that of W2?

(1) Height of tank W1 is equal to that of W2.

(2) W1 has a square base. Area of base of W1 is same as the area of base of W2.


IMO D.

W1 and W2 are rectangular tanks so they have a height, width and depth. Essentially they do not have curved surfaces!

Hence Curved surface of W1 = 0 = curved surface of W2.

Either of Statements are sufficient to answer the prompt.

This seems to me the only viable explanation to this question :-)

Please give kudos if you agree with my explanation ...


Hello

I have edited the question to 'lateral surface area'. Thanks
DS Forum Moderator
avatar
G
Joined: 22 Aug 2013
Posts: 1021
Location: India
Premium Member CAT Tests
Re: W1, W2 are two rectangular tanks. Is lateral surface area of W1 > W2? [#permalink]

Show Tags

New post 23 Mar 2018, 19:29
[quote="Jayath"]I think you mean Lateral Surface Area - cuboid and cubes do not have curved surface area. Anyway, are you sure the answer is C?






Hello

I have edited the question to 'lateral surface area'. Thanks

And answer will be C as Niks has explained
Intern
Intern
avatar
B
Joined: 11 Feb 2018
Posts: 18
W1, W2 are two rectangular tanks. Is lateral surface area of W1 > W2? [#permalink]

Show Tags

New post 24 Mar 2018, 04:04
amanvermagmat wrote:
W1, W2 are two rectangular tanks. Is the lateral surface area of W1 greater than that of W2?

(1) Height of tank W1 is equal to that of W2.

(2) W1 has a square base. Area of base of W1 is same as the area of base of W2.

I agree that the answer will be C. But my explanation as below. Plz correct me if i am wong

Lateral surface area of W1; after combining both the statement is 2h(L+L) as it has a square base

So if i assume L=2, then lateral area for W1 becomes = 2h(2+2)

But in statement 2 it is not mentioned that W2 base is also a square; it only says the area of W2 base = base of W1
So, for W2 base, L can be= 1 and B can be=4; so base area of W2 = 4*1 (equal to base area of W1)

Now for W1 lateral area = 2H(2+2) but W2 lateral area = 2H(1+4)

So, W2>W1,(as in statement 1 it is mentioned H is same for both tanks); we can try out different number combinations and always see that W2> W1

The catch here that in statement 2 it is not mentioned that W2 also has a square base (only says it has same base area as W1 )
W1, W2 are two rectangular tanks. Is lateral surface area of W1 > W2?   [#permalink] 24 Mar 2018, 04:04
Display posts from previous: Sort by

W1, W2 are two rectangular tanks. Is lateral surface area of W1 > W2?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.