It is currently 17 Oct 2017, 17:54

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

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

A cashier mentally reversed the digits of one customer's correct amoun

Author Message
TAGS:

Hide Tags

Intern
Joined: 19 Dec 2009
Posts: 32

Kudos [?]: 72 [1], given: 9

A cashier mentally reversed the digits of one customer's correct amoun [#permalink]

Show Tags

18 Oct 2010, 11:08
1
KUDOS
1
This post was
BOOKMARKED
00:00

Difficulty:

25% (medium)

Question Stats:

71% (01:06) correct 29% (01:29) wrong based on 96 sessions

HideShow timer Statistics

A cashier mentally reversed the digits of one customer's correct amount of change and thus gave the customer an incorrect amount of change. If the cash register contained 45 cents more than it should have as a result of this error, which of the following could have been the correct amount of change in cents?

A 14
B 45
C 54
D 65
E 83
[Reveal] Spoiler: OA

Last edited by Bunuel on 21 Oct 2015, 00:02, edited 2 times in total.
Renamed the topic and edited the question.

Kudos [?]: 72 [1], given: 9

Manager
Joined: 08 Sep 2010
Posts: 223

Kudos [?]: 321 [5], given: 21

Location: India
WE 1: 6 Year, Telecom(GSM)
Re: A cashier mentally reversed the digits of one customer's correct amoun [#permalink]

Show Tags

18 Oct 2010, 11:21
5
KUDOS
rtaha2412 wrote:
A cashier mentally reversed the digits of one customer's correct amount of change and this gave the customer an incorrect amount of change. Id the cash register contained 45 cents more than it should have as a result of this error, which of the following could have been the correct amount of change in cents.

A 14
B 45
C 54
D 65
E 83

Suppose the correct amount of Change is xy In place of that he has given yx change.

The decimal value of xy is 10x+y
and for yx it is 10y +x

According to the question ,the difference is 45 cents .

10x + y - (10y+x) =45
9(x-y)=45 or x-y=5

So the difference of two digit should be 5 and the only option with this criteria is 83.Hence answer is E.

Consider KUDOS if it helped u in some way.

Kudos [?]: 321 [5], given: 21

GMAT Club Legend
Joined: 09 Sep 2013
Posts: 16760

Kudos [?]: 273 [0], given: 0

Re: A cashier mentally reversed the digits of one customer's correct amoun [#permalink]

Show Tags

21 Oct 2015, 00:01
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

Kudos [?]: 273 [0], given: 0

Senior Manager
Joined: 20 Aug 2015
Posts: 396

Kudos [?]: 335 [0], given: 10

Location: India
GMAT 1: 760 Q50 V44
Re: A cashier mentally reversed the digits of one customer's correct amoun [#permalink]

Show Tags

21 Oct 2015, 03:58
rtaha2412 wrote:
A cashier mentally reversed the digits of one customer's correct amount of change and thus gave the customer an incorrect amount of change. If the cash register contained 45 cents more than it should have as a result of this error, which of the following could have been the correct amount of change in cents?

A 14
B 45
C 54
D 65
E 83

Assume the correct change to be 10x + y cents
Here x = tens digit and y - units digit
Reversed change = 10y + x

9x - 9y = 45
or x - y =5
Only Option E satisfies this criteria.

The other way to solve this question is to simply reverse the digits of the options and subtract from the given value.
Only Option E satisfies the condition.
_________________

Reach out to us at bondwithus@gmatify.com

Kudos [?]: 335 [0], given: 10

Intern
Joined: 29 Aug 2015
Posts: 12

Kudos [?]: 4 [0], given: 8

Re: A cashier mentally reversed the digits of one customer's correct amoun [#permalink]

Show Tags

21 Oct 2015, 09:31
Bunuel,
Does this problem require using a formula??? I was able to figure the answer just by skimming through the options.If there is some specific procedure to solve this problem. Do share the same.

Kudos [?]: 4 [0], given: 8

Math Expert
Joined: 02 Sep 2009
Posts: 41873

Kudos [?]: 128604 [1], given: 12180

Re: A cashier mentally reversed the digits of one customer's correct amoun [#permalink]

Show Tags

21 Oct 2015, 11:30
1
KUDOS
Expert's post
HarrishGowtham wrote:
Bunuel,
Does this problem require using a formula??? I was able to figure the answer just by skimming through the options.If there is some specific procedure to solve this problem. Do share the same.

Well, I think best approaches are given in the posts above.
_________________

Kudos [?]: 128604 [1], given: 12180

Manager
Joined: 02 Jun 2015
Posts: 92

Kudos [?]: 25 [0], given: 14

Location: Brazil
Concentration: Entrepreneurship, General Management
GPA: 3.3
Re: A cashier mentally reversed the digits of one customer's correct amoun [#permalink]

Show Tags

21 Oct 2015, 11:57
You don't need to complicate too much.

Just check the answers and reverse the numbers until you get 45.
83 - 38 = 45

Kudos [?]: 25 [0], given: 14

Senior Manager
Status: DONE!
Joined: 05 Sep 2016
Posts: 408

Kudos [?]: 23 [0], given: 283

Re: A cashier mentally reversed the digits of one customer's correct amoun [#permalink]

Show Tags

18 Oct 2016, 15:18
Question is asking you to play with the difference btwn each answer choice and its reciprocal to see which will give you \$0.45.

Thus, 83-38 = 45

E is correct.

Kudos [?]: 23 [0], given: 283

Re: A cashier mentally reversed the digits of one customer's correct amoun   [#permalink] 18 Oct 2016, 15:18
Display posts from previous: Sort by