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 It is currently 14 Dec 2018, 02:02

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• ### GMATbuster's Weekly GMAT Quant Quiz, Tomorrow, Saturday at 9 AM PST

December 14, 2018

December 14, 2018

09:00 AM PST

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10 Questions will be posted on the forum and we will post a reply in this Topic with a link to each question. There are prizes for the winners.
• ### Typical Day of a UCLA MBA Student - Recording of Webinar with UCLA Adcom and Student

December 14, 2018

December 14, 2018

10:00 PM PST

11:00 PM PST

Carolyn and Brett - nicely explained what is the typical day of a UCLA student. I am posting below recording of the webinar for those who could't attend this session.

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21 Aug 2018, 05:30
00:00

Difficulty:

15% (low)

Question Stats:

89% (01:58) correct 11% (02:40) wrong based on 28 sessions

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At Joe's candy store, the total cost of 1 gumball and 1 lollipop is $0.74. The total cost of 1 chocolate bar and 1 lollipop is$0.92. The total cost of 1 gumball and 1 chocolate bar is $1.24. What is the cost in dollars of 1 chocolate bar? A. 0.53 B. 0.59 C. 0.63 D. 0.67 E. 0.71 _________________ Senior PS Moderator Joined: 26 Feb 2016 Posts: 3325 Location: India GPA: 3.12 Re: At Joe's candy store, the total cost of 1 gumball and 1 lollipop is$0  [#permalink]

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21 Aug 2018, 05:35
Bunuel wrote:
At Joe's candy store, the total cost of 1 gumball and 1 lollipop is $0.74. The total cost of 1 chocolate bar and 1 lollipop is$0.92. The total cost of 1 gumball and 1 chocolate bar is $1.24. What is the cost in dollars of 1 chocolate bar? A. 0.53 B. 0.59 C. 0.63 D. 0.67 E. 0.71 Let the cost of a gumball be G, the cost of a chocolate bar be C, and the cost of a lollipop be L From the question stem, we can form the three equations, G + L = 74 | C + L = 92 | G + C = 124 Adding the three, we get 2(G + L + C) = 124 + 74 + 92 = 290 -> G + L + C = 145 Since we need the cost of a chocolate bar, we need to reduce the cost of the lollipop and gumball. Therefore, the cost of one chocolate bar is 145 - 74 = 71 cents or 0.71$(Option E)

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Re: At Joe's candy store, the total cost of 1 gumball and 1 lollipop is $0 [#permalink] ### Show Tags 21 Aug 2018, 05:37 1G + 1L =$0.74.....(1)
1C + 1L = $0.92.....(2) 1G +1C =$1.24......(3)

Subtracting 1 from 2 gives 1C - 1G = $0.18 Adding this to 3 gives 2C =$1.42
Or 1C = $0.71 E is the answer. _________________ When you want something, the whole universe conspires in helping you achieve it. Board of Directors Status: QA & VA Forum Moderator Joined: 11 Jun 2011 Posts: 4276 Location: India GPA: 3.5 WE: Business Development (Commercial Banking) Re: At Joe's candy store, the total cost of 1 gumball and 1 lollipop is$0  [#permalink]

### Show Tags

21 Aug 2018, 06:33
Bunuel wrote:
At Joe's candy store, the total cost of 1 gumball and 1 lollipop is $0.74. The total cost of 1 chocolate bar and 1 lollipop is$0.92. The total cost of 1 gumball and 1 chocolate bar is $1.24. What is the cost in dollars of 1 chocolate bar? A. 0.53 B. 0.59 C. 0.63 D. 0.67 E. 0.71 $$g + l = 0.74$$ $$c + l = 0.92$$ $$g + c = 1.24$$ Add the 3 equations - $$2g + 2c + 2l = 2.9$$ Or, $$g + c + l = 1.45$$ Now, subtract - $$c = ( g + c + l ) - ( g + l )$$ Or, $$c = 1.45 - 0.74$$ Or, $$c = 0.71$$, Answer must be (E) _________________ Thanks and Regards Abhishek.... PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only ) Re: At Joe's candy store, the total cost of 1 gumball and 1 lollipop is$0 &nbs [#permalink] 21 Aug 2018, 06:33
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