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

It is currently 20 Mar 2019, 00:33

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

Over a four-game stretch, Dennis’s bowling score averaged 240. By what

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Manager
Manager
avatar
P
Joined: 29 Nov 2018
Posts: 132
Concentration: Marketing, Strategy
Over a four-game stretch, Dennis’s bowling score averaged 240. By what  [#permalink]

Show Tags

New post 15 Jan 2019, 03:36
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

67% (02:09) correct 33% (01:10) wrong based on 3 sessions

HideShow timer Statistics

Over a four-game stretch, Dennis’s bowling score averaged 240. By what percent would his score have had to have been higher in order for him to average a perfect game (300)?

A.15
B.20
C.25
D.30
E.50

In this question, calculating either sum is unnecessary, as the percent change
in his average would be the same as the percent change in his total score.
Since the figures are already calculated for you in terms of average, you can
calculate the percent change just given the averages: (300 – 240)/240 = ¼, so
John would have needed to increase his score by 25%.


Simple enough question but a very important concept to remember! :)
Manager
Manager
avatar
G
Joined: 26 Dec 2018
Posts: 142
Location: India
Re: Over a four-game stretch, Dennis’s bowling score averaged 240. By what  [#permalink]

Show Tags

New post 15 Jan 2019, 03:53
It’s a 4 Game Stretch, so
Original Score = 4 x 240
Expected Score = 4 x 300

By what PERECNT would his score have had to have been HIGHER in order for him to average a perfect game (300)?

We need to calculate Expected Percentage Increase
Percentage Increase =((Change In Score) / Original Score) x 100 %

Change in Score = 4 x (300-240) = 4 x 60

Percentage Increase = ((4 x 60 ) / (4 x 240)) x 100%
= 25%
ANSWER OPTION C IS CORRECT
_________________

GOOD LUCK!

Manager
Manager
User avatar
S
Joined: 13 Feb 2018
Posts: 159
GMAT 1: 640 Q48 V28
Premium Member CAT Tests
Over a four-game stretch, Dennis’s bowling score averaged 240. By what  [#permalink]

Show Tags

New post 15 Jan 2019, 03:56
Sorry but I think its poorly worded

"By what percent would his score" you mean last 4th score? all the four score or you mean the fifth score?
"By what percent would his score have had to have been higher" than what? his average score or something else?


P.S. make some changes and it's a good question

Cheers
L
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 53716
Re: Over a four-game stretch, Dennis’s bowling score averaged 240. By what  [#permalink]

Show Tags

New post 15 Jan 2019, 04:09
cfc198 wrote:
Over a four-game stretch, Dennis’s bowling score averaged 240. By what percent would his score have had to have been higher in order for him to average a perfect game (300)?

A.15
B.20
C.25
D.30
E.50

In this question, calculating either sum is unnecessary, as the percent change
in his average would be the same as the percent change in his total score.
Since the figures are already calculated for you in terms of average, you can
calculate the percent change just given the averages: (300 – 240)/240 = ¼, so
John would have needed to increase his score by 25%.



Simple enough question but a very important concept to remember! :)



Discussed here: https://gmatclub.com/forum/over-a-four- ... 76701.html


TOPIC IS LOCKED AND ARCHIVED.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

GMAT Club Bot
Re: Over a four-game stretch, Dennis’s bowling score averaged 240. By what   [#permalink] 15 Jan 2019, 04:09
Display posts from previous: Sort by

Over a four-game stretch, Dennis’s bowling score averaged 240. By what

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


cron
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®.