It is currently 24 May 2019, 15:48
My Tests

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.

Krunchy Kustard sells only two kinds of doughnuts: glazed an

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
GRE Prep Club Legend
GRE Prep Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4857
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 112

Kudos [?]: 1860 [1] , given: 397

Krunchy Kustard sells only two kinds of doughnuts: glazed an [#permalink] New post 14 Jun 2018, 14:10
1
This post received
KUDOS
Expert's post
00:00

Question Stats:

100% (01:12) correct 0% (00:00) wrong based on 6 sessions
Krunchy Kustard sells only two kinds of doughnuts: glazed and cream-filled. A glazed doughnut has 200 calories, and a cream-filled doughnut has 360 calories. If Felipe ate 5 doughnuts totaling 1,640 calories, how many were glazed?

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
[Reveal] Spoiler: OA

_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test

1 KUDOS received
Target Test Prep Representative
User avatar
Status: Head GRE Instructor
Affiliations: Target Test Prep
Joined: 09 May 2016
Posts: 161
Location: United States
Followers: 4

Kudos [?]: 132 [1] , given: 0

Re: Krunchy Kustard sells only two kinds of doughnuts: glazed an [#permalink] New post 20 Jun 2018, 15:49
1
This post received
KUDOS
Expert's post
sandy wrote:
Krunchy Kustard sells only two kinds of doughnuts: glazed and cream-filled. A glazed doughnut has 200 calories, and a cream-filled doughnut has 360 calories. If Felipe ate 5 doughnuts totaling 1,640 calories, how many were glazed?

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5


We can let g = the number of glazed filled donuts and c = the number of calories in cream filled donuts and create the equations:

g + c = 5

c = 5 - g

and

200g + 360c = 1640

20g + 36c = 164

5g + 9c = 41

Substituting (5 - g) for c, we have:

5g + 9(5 - g) = 41

5g + 45 - 9g = 41

4 = 4g

1 = g

Answer: A
_________________

Jeffrey Miller

Head of GRE Instruction

Jeff@TargetTestPrep.com
TTP - Target Test Prep Logo
22 Reviews

5-star rated online GRE quant
self study course

See why Target Test Prep is the top rated GRE quant course on GRE Prep Club. Read Our Reviews

GRE Prep Club Legend
GRE Prep Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4857
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 112

Kudos [?]: 1860 [0], given: 397

Re: Krunchy Kustard sells only two kinds of doughnuts: glazed an [#permalink] New post 05 Jul 2018, 01:41
Expert's post
Explanation

Assign variables to the two types of doughnuts, and write equations based on the given information:

Number of glazed = G

Number of cream-filled = C

\(G + C = 5\) (the number of doughnuts)
\(1,640 = 200 G + 360C\) (the number of calories)

The question asks for G, so isolate C in first equation and substitute into the second equation:

\(C = 5 - G\)

\(1,640 = 200G + 360(5 - G)\)

\(1,640 = 200G + 1,800 - 360G\)

\(1,640 = 1,800 - 160G\)

\(-160 = -160G\)

\(G = 1\)

Hence option A is correct!

Check the answer. If Felipe at 1 glazed doughnut, he ate 4 cream-filled doughnuts. He ate (1 × 200) + (4 × 360) = 200 + 1,440 = 1,640 calories.
_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test

Re: Krunchy Kustard sells only two kinds of doughnuts: glazed an   [#permalink] 05 Jul 2018, 01:41
Display posts from previous: Sort by

Krunchy Kustard sells only two kinds of doughnuts: glazed an

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

GRE Prep Club Forum Home| About| Terms and Conditions and Privacy Policy| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.