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# The combined cost of Car X and Car Y is 7250$ post reply Question banks Downloads My Bookmarks Reviews Important topics Author Message Intern Joined: 01 May 2017 Posts: 18 Location: United States (IL) Concentration: Technology, Strategy GPA: 3.95 The combined cost of Car X and Car Y is 7250$  [#permalink]

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Updated on: 10 Mar 2018, 11:40
3
00:00

Difficulty:

45% (medium)

Question Stats:

56% (00:57) correct 44% (00:36) wrong based on 9 sessions

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The combined cost of Car X and Car Y is 7250$. Had the Car X been 25% cheaper, and the Car Y been 20% costlier, Combined cost would have been 6,450$. How much Car X is costlier than Car Y?

A : 500
B : 800
C : 1000
D : 2750
E : 2250

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Originally posted by prady2231 on 10 Mar 2018, 01:25.
Last edited by prady2231 on 10 Mar 2018, 11:40, edited 2 times in total.
Intern
Joined: 01 May 2017
Posts: 18
Location: United States (IL)
Concentration: Technology, Strategy
GPA: 3.95

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10 Mar 2018, 08:21
The combined cost of Car X and Car Y is 7250$. Had the Car X been 25% cheaper, and the Car Y been 20% costlier, Combined cost would have been 6,450$. How much Car X is costlier than Car Y?

A : 500
B : 600
C : 700
D : 800
E : 1000

I am getting $2750 as answer. if car X is 25% cheaper - it's price doesn't become 1/4th -- but rather 3/4th of original price. first equation : $$X+Y = 7250$$ second equation : $$0.75X + 1.20 Y = 6450$$. Solving both for X, Y we have : Y = 6750/3 using first equation and solution of Y to find X - Y ( ANswe r to prompt question of " how much is X costlier than Y) We get $$X - Y = 2750$$ Please let me know what you guy's think. Hope this helped.... _________________ Regards, Gladi “Do. Or do not. There is no try.” - Yoda (The Empire Strikes Back) Senior SC Moderator Joined: 22 May 2016 Posts: 2361 The combined cost of Car X and Car Y is 7250$  [#permalink]

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10 Mar 2018, 11:03
[quote="prady2231"]The combined cost of Car X and Car Y is 7250$. Had the Car X been 25% cheaper, and the Car Y been 20% costlier, Combined cost would have been 6,450$. How much Car X is costlier than Car Y?

A : 500
B : 600
C : 700
D : 800
E : 1000[/quote]
[url=https://gmatclub.com:443/forum/memberlist.php?mode=viewprofile&un=Gladiator59][b]Gladiator59[/b][/url] , I got $2,750 as well. [EDIT] X + Y = 7250 Y = 7250 - X .75X + 1.2Y = 6450 .75X + 1.2(7250 - X) = 6450 .75X + 8700 - 1.2X = 6450 -0.45X = -$2250
X = 5,000
Y = 7250 - 5,000 = 2250
X - Y = (5,000 - 2,250) = $2,750 Answer E [url=https://gmatclub.com:443/forum/memberlist.php?mode=viewprofile&un=prady2231][b]prady2231[/b][/url] , Would you please check the question's wording and/or the answers? EDITED: Corrected arithmetic at line (X - Y) Intern Joined: 01 May 2017 Posts: 18 Location: United States (IL) Concentration: Technology, Strategy GPA: 3.95 Re: The combined cost of Car X and Car Y is 7250$  [#permalink]

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10 Mar 2018, 11:46
1
Corrected the options. Correct answer is 2750.
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Joined: 09 Mar 2016
Posts: 1287
The combined cost of Car X and Car Y is 7250$[#permalink] ### Show Tags 10 Mar 2018, 12:10 prady2231 wrote: The combined cost of Car X and Car Y is 7250$. Had the Car X been 25% cheaper, and the Car Y been 20% costlier, Combined cost would have been 6,450$. How much Car X is costlier than Car Y? A : 500 B : 800 C : 1000 D : 2750 E : 2250 $$x+y = 7250$$ --> $$y = 7250 -x$$ $$x-0.25x + 1.2y = 6450$$ $$x-0.25x+1.2(7250 -x) = 6450$$ $$x-0.25x+8700-1.2x = 6450$$ $$x-0.25x-1.2x=6450-8700$$ $$-0.45x=-2250$$ $$x = 5000$$ $$7250-5000= 2250$$ so its E looks like the OA was incorrect Bunuel can you pay attention to this discussion shouldn't the correct answer be 2,250 ? niks18 ?:) --== Message from the GMAT Club Team ==-- THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION. This discussion does not meet community quality standards. It has been retired. If you would like to discuss this question please re-post it in the respective forum. Thank you! To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you. The combined cost of Car X and Car Y is 7250$ &nbs [#permalink] 10 Mar 2018, 12:10
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