Forum Home > GMAT > Quantitative > Problem Solving (PS)
Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Dec 0407:30 AM PST
-08:30 AM PST
Join us for a transformative live session where we'll demystify GMAT Algebra and show you how to master three of the most challenging topics: linear inequalities, quadratic inequalities, and absolute values.
Dec 0308:30 AM PST
-09:30 AM PST
Wondering about your chances for top MBA programs? Join ARINGO for a concise Q&A session where we'll evaluate profiles, estimate school prospects, and offer expert tips.- Dec 06
10:00 AM PST
-11:00 AM PST
In this video, we uncover the top errors applicants unknowingly make during MBA interviews and provide actionable tips to avoid them. Watch it carefully to avoid the common mistakes committed by applicants in delivering interviews. 
Dec 0711:00 AM IST
-01:00 PM IST
Do RC/MSR passages scare you? e-GMAT is conducting a masterclass to help you learn – Learn effective reading strategies Tackle difficult RC & MSR with confidence Excel in timed test environment- Dec 08
11:00 AM IST
-01:00 PM IST
Attend this session to evaluate your current skill level, learn process skills, and solve through tough Arithmetic questions.
Updated on: 25 Nov 2013, 13:04
Originally posted by gmatfighter12 on 25 Nov 2013, 12:49.
Last edited by Bunuel on 25 Nov 2013, 13:04, edited 1 time in total.
Last edited by Bunuel on 25 Nov 2013, 13:04, edited 1 time in total.
Edited the question.
Kudos
Bookmarks
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
79% (01:49) correct
21%
(01:48)
wrong
based on 1512
sessions
History
Date
Time
Result
Not Attempted Yet
At a certain factory, 10 percent of the staplers produced on Monday were defective and 2 percent of the nondefective staplers were rejected by mistake. If 90 of the nondefective staplers were rejected, what was the number of staplers produced that day
A. 4,000
B. 4,200
C. 4,500
D. 4,800
E. 5,000
A. 4,000
B. 4,200
C. 4,500
D. 4,800
E. 5,000
25 Nov 2013, 13:12
Kudos
Bookmarks
gmatfighter12
At a certain factory, 10 percent of the staplers produced on Monday were defective and 2 percent of the nondefective staplers were rejected by mistake. If 90 of the nondefective staplers were rejected, what was the number of staplers produced that day
A. 4,000
B. 4,200
C. 4,500
D. 4,800
E. 5,000
A. 4,000
B. 4,200
C. 4,500
D. 4,800
E. 5,000
Given that:
2 percent of the nondefective staplers were rejected.
90 of the nondefective staplers were rejected.
Thus 0.02*{nondefective} = 90 --> {nondefective} = 4,500.
We also know that nondefective staplers were 90% of all staplers, thus 0.9*{total} = 4,500 --> {total} = 5,000.
Answer: E.
Hope it's clear.
15 Jan 2015, 22:21
Kudos
Bookmarks
Hi All,
This question is all about percents and ratios, so you can use a variety of "math approaches" to solve it (including TESTing THE ANSWERS).
Here's an approach that focuses on the ratios.
We're told that 10% of staplers in a factory are defective.
X = Total staplers
.1X = defective staplers
.9X = normal staplers
Next, we're told that 2% of the normal staplers were rejected by mistake and that this = 90 staplers...
.9X(.02) = 90
.018X = 90
18X = 90,000
X = 5,000
Final Answer:
GMAT assassins aren't born, they're made,
Rich
This question is all about percents and ratios, so you can use a variety of "math approaches" to solve it (including TESTing THE ANSWERS).
Here's an approach that focuses on the ratios.
We're told that 10% of staplers in a factory are defective.
X = Total staplers
.1X = defective staplers
.9X = normal staplers
Next, we're told that 2% of the normal staplers were rejected by mistake and that this = 90 staplers...
.9X(.02) = 90
.018X = 90
18X = 90,000
X = 5,000
Final Answer:
GMAT assassins aren't born, they're made,
Rich
