Find all School-related info fast with the new School-Specific MBA Forum

It is currently 21 Oct 2014, 22:37

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Two numbers have a sum of 10 and a product of 20. What is

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 28 Feb 2003
Posts: 100
Followers: 1

Kudos [?]: 3 [0], given: 0

Two numbers have a sum of 10 and a product of 20. What is [#permalink] New post 19 May 2003, 02:57
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

25% (00:00) correct 75% (00:09) wrong based on 4 sessions
Two numbers have a sum of 10 and a product of 20. What is the sum of the reciprocals of the two numbers?

A) 1/4
B) 2
C) 1/8
D) 1/2
E) 1/10
Manager
Manager
User avatar
Joined: 22 Apr 2003
Posts: 180
Followers: 1

Kudos [?]: 4 [0], given: 0

Re: GMAT-PS: sum and product [#permalink] New post 19 May 2003, 03:21
brstorewala wrote:
Two numbers have a sum of 10 and a product of 20. What is the sum of the reciprocals of the two numbers?

A) 1/4
B) 2
C) 1/8
D) 1/2
E) 1/10


Answer is D

Sol:X+Y=10 X*Y=20

1/X+1/Y=?

Y+X/XY=10/20=1/2
Director
Director
avatar
Joined: 01 Feb 2011
Posts: 768
Followers: 14

Kudos [?]: 58 [0], given: 42

CAT Tests
Re: GMAT-PS: sum and product [#permalink] New post 15 Apr 2011, 13:47
10/20 =1/2

Answer is D.

Posted from my mobile device Image
Manager
Manager
avatar
Joined: 17 Jan 2011
Posts: 236
Followers: 1

Kudos [?]: 22 [0], given: 4

Re: GMAT-PS: sum and product [#permalink] New post 15 Apr 2011, 19:40
I got into substituting values into -b+/- root b^2 - 4ac/2a and ended up spending 4 mins to solve this question, should remember the rule, every GMAT math question can be solved in less than 2 mins. Good job chihao!
_________________

Good Luck!!!

***Help and be helped!!!****

Re: GMAT-PS: sum and product   [#permalink] 15 Apr 2011, 19:40
    Similar topics Author Replies Last post
Similar
Topics:
1 Experts publish their posts in the topic What is the sum of digits of number 10^28 – 28? loveparis 3 09 Feb 2011, 12:09
Two numbers have a sum of 10 and a product of 20. What is Capthan 1 21 Mar 2008, 05:22
3 If s is the sum of two prime numbers and p is the product of kevincan 14 12 Mar 2007, 15:15
Two numbers have a sum of 10 and a product of 20 What is jamesrwrightiii 4 20 Jul 2006, 14:49
Is the product of two real numbers x and y > 20 (1) SunShine 11 06 Mar 2006, 16:59
Display posts from previous: Sort by

Two numbers have a sum of 10 and a product of 20. What is

  Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group and phpBB SEO

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®.