GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 18 Nov 2018, 10:41

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 in November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
  • How to QUICKLY Solve GMAT Questions - GMAT Club Chat

     November 20, 2018

     November 20, 2018

     09:00 AM PST

     10:00 AM PST

    The reward for signing up with the registration form and attending the chat is: 6 free examPAL quizzes to practice your new skills after the chat.
  • The winning strategy for 700+ on the GMAT

     November 20, 2018

     November 20, 2018

     06:00 PM EST

     07:00 PM EST

    What people who reach the high 700's do differently? We're going to share insights, tips and strategies from data we collected on over 50,000 students who used examPAL.

Does nm =40? (1) 10/n = m/4 (2) 5n = 20 and 8m = 80

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

Hide Tags

Manager
Manager
avatar
Joined: 10 Nov 2010
Posts: 190
Location: India
Concentration: Strategy, Operations
GMAT 1: 520 Q42 V19
GMAT 2: 540 Q44 V21
WE: Information Technology (Computer Software)
Does nm =40? (1) 10/n = m/4 (2) 5n = 20 and 8m = 80  [#permalink]

Show Tags

New post Updated on: 08 Nov 2018, 03:18
1
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

91% (00:22) correct 9% (00:30) wrong based on 253 sessions

HideShow timer Statistics

Does nm =40?

(1) 10/n = m/4
(2) 5n = 20 and 8m = 80

a) 10/n = m/4
if we consider different signs of n & m
nm=40 or nm=-40
NS

b) 5n=20 => n=4
8m = 80 =>m=10
=> nm=40 ---Sufficient

Guys do we need to consider that a) is providing ratio so we don't need to consider -ve signs.

_________________

The proof of understanding is the ability to explain it.


Originally posted by GMATD11 on 01 May 2012, 00:29.
Last edited by Bunuel on 08 Nov 2018, 03:18, edited 4 times in total.
Edited the question
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 50627
Re: Does nm =40? (1) 10/n = m/4 (2) 5n = 20 and 8m = 80  [#permalink]

Show Tags

New post 01 May 2012, 00:44
Intern
Intern
avatar
B
Joined: 20 Sep 2018
Posts: 30
Re: Does nm =40? (1) 10/n = m/4 (2) 5n = 20 and 8m = 80  [#permalink]

Show Tags

New post 31 Oct 2018, 09:58
gmatbusters wrote:
Does nm =40?
(1) \(\frac{10}{n} = \frac{m}{4}\)
(2) 5n = 20 and 8m = 80


1. Cross multiplying, we get mn = 40
2. Shows that n =4 and m = 10. mn = 40

D
GMAT Club Bot
Re: Does nm =40? (1) 10/n = m/4 (2) 5n = 20 and 8m = 80 &nbs [#permalink] 31 Oct 2018, 09:58
Display posts from previous: Sort by

Does nm =40? (1) 10/n = m/4 (2) 5n = 20 and 8m = 80

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


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| 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®.