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

It is currently 16 Feb 2019, 21:53

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 February
PrevNext
SuMoTuWeThFrSa
272829303112
3456789
10111213141516
17181920212223
242526272812
Open Detailed Calendar
  • Free GMAT Algebra Webinar

     February 17, 2019

     February 17, 2019

     07:00 AM PST

     09:00 AM PST

    Attend this Free Algebra Webinar and learn how to master Inequalities and Absolute Value problems on GMAT.
  • Free GMAT Strategy Webinar

     February 16, 2019

     February 16, 2019

     07:00 AM PST

     09:00 AM PST

    Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.

If Karishma spends 53 seconds folding H napkins, how many seconds

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

Hide Tags

 
Director
Director
User avatar
P
Joined: 08 Jun 2013
Posts: 552
Location: France
Schools: INSEAD Jan '19
GMAT 1: 200 Q1 V1
GPA: 3.82
WE: Consulting (Other)
GMAT ToolKit User Premium Member
If Karishma spends 53 seconds folding H napkins, how many seconds  [#permalink]

Show Tags

New post 29 Sep 2018, 02:28
1
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

76% (00:39) correct 24% (01:03) wrong based on 31 sessions

HideShow timer Statistics

If Karishma spends 53 seconds folding H napkins, how many seconds will it take her to fold B napkins at the same rate?

A) 53B/H

B) HB/53

C) 53/HB

D) 53H/B

E) 53HB

_________________

Everything will fall into place…

There is perfect timing for
everything and everyone.
Never doubt, But Work on
improving yourself,
Keep the faith and
Stay ready. When it’s
finally your turn,
It will all make sense.

e-GMAT Representative
User avatar
D
Joined: 04 Jan 2015
Posts: 2568
If Karishma spends 53 seconds folding H napkins, how many seconds  [#permalink]

Show Tags

New post 29 Sep 2018, 03:36

Solution



Given:
    • Karishma spends 53 seconds folding H napkins

To find:
    • The time Karishma will take (in secs) to fold B napkins, working at the same rate

Approach and Working:

To fold H napkins, Karishma takes 53 seconds
    • Hence, to fold 1 napkin, Karishma takes \(\frac{53}{H}\) seconds
    Therefore, to fold B napkins, Karishma takes \(\frac{53}{H} * B\) seconds = \(\frac{53B}{H}\) seconds

Hence, the correct answer is option A.

Answer: A

Image

_________________








Register for free sessions
Number Properties:- Get 5 free video lessons, 50 practice questions | Algebra:-Get 4 free video lessons, 40 practice questions
Quant Workshop:- Get 100 practice questions | Free Strategy Weession:- Key strategy to score 760

Success Stories
Q38 to Q50 | Q35 to Q50 | More Success Stories

Ace GMAT
Articles and Question to reach Q51 | Question of the week | Tips From V40+ Scoreres | V27 to V42:- GMAT 770 | Guide to Get into ISB-MBA

Must Read Articles
Number Properties – Even Odd | LCM GCD | Statistics-1 | Statistics-2 | Remainders-1 | Remainders-2
Word Problems – Percentage 1 | Percentage 2 | Time and Work 1 | Time and Work 2 | Time, Speed and Distance 1 | Time, Speed and Distance 2
Advanced Topics- Permutation and Combination 1 | Permutation and Combination 2 | Permutation and Combination 3 | Probability
Geometry- Triangles 1 | Triangles 2 | Triangles 3 | Common Mistakes in Geometry
Algebra- Wavy line | Inequalities

Practice Questions
Number Properties 1 | Number Properties 2 | Algebra 1 | Geometry | Prime Numbers | Absolute value equations | Sets



| '4 out of Top 5' Instructors on gmatclub | 70 point improvement guarantee | www.e-gmat.com

Senior SC Moderator
avatar
V
Joined: 22 May 2016
Posts: 2471
If Karishma spends 53 seconds folding H napkins, how many seconds  [#permalink]

Show Tags

New post 29 Sep 2018, 20:39
Harshgmat wrote:
If Karishma spends 53 seconds folding H napkins, how many seconds will it take her to fold B napkins at the same rate?

A) 53B/H

B) HB/53

C) 53/HB

D) 53H/B

E) 53HB

The trap in this question: \(B\) napkins = Work
Work needs to be divided by rate in order to get time

How many seconds to fold \(B\) napkins?

Rate: \(\frac{H.napkins}{53secs}=\frac{H}{53}\)

Work: \(B\) napkins

\(r*t=W\)
\(\frac{H}{53}*t=B\)
Time, \(t=\frac{B}{(\frac{H}{53})}=(B*\frac{53}{H})=\frac{53B}{H}\)

Answer A
_________________

To live is the rarest thing in the world.
Most people just exist.

Oscar Wilde

Intern
Intern
avatar
B
Joined: 14 Aug 2017
Posts: 13
GMAT ToolKit User
If Karishma spends 53 seconds folding H napkins, how many seconds  [#permalink]

Show Tags

New post 30 Sep 2018, 01:18
Hi Everyone,

I solved the question in a different way. I feel that it is a quicker approach, so thought of sharing the approach.

There are 2 variables (H,B) in the question. Lets assume some values to both H and B , so that we can calculate it more easily.

Let H = 10 and B =20. (We can assume any number , it will lead to the same answer. Here I am taking 10 and 20 for making the calculations easy)

Now we will workout the problem with the information given in the question stem.
The question stem says Karishma takes 53 second to fold H napkins . Substituting H we get :-

10 napkins =53 secs
1 napkin = 53/10
B napkins = (53/10)*B
we have assumed B = 20, substituting the value of B in the above equation, we will get :-
20 napkins = (53/10)*20=106

Now we can substitute the values of B and H in the answer choices and the answer choice which provides the same result(106) as above will be the correct answer.

(A) - > 53B/H= (53*20)/10=106 .

which is same as the answer we got above.
Therefore Option A is correct answer.
GMAT Club Bot
If Karishma spends 53 seconds folding H napkins, how many seconds   [#permalink] 30 Sep 2018, 01:18
Display posts from previous: Sort by

If Karishma spends 53 seconds folding H napkins, how many seconds

  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®.