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

 It is currently 14 Dec 2019, 11:15

### 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

# On a trip from the United States to Canada, Isabella took d U.S. dolla

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 59725
On a trip from the United States to Canada, Isabella took d U.S. dolla  [#permalink]

### Show Tags

21 Mar 2019, 23:15
00:00

Difficulty:

35% (medium)

Question Stats:

65% (02:08) correct 35% (01:56) wrong based on 23 sessions

### HideShow timer Statistics

On a trip from the United States to Canada, Isabella took d U.S. dollars. At the border she exchanged them all, receiving 10 Canadian dollars for every 7 U.S. dollars. After spending 60 Canadian dollars, she had d Canadian dollars left. What is the sum of the digits of d?

(A) 5
(B) 6
(C) 7
(D) 8
(E) 9

_________________
GMAT Club Legend
Joined: 18 Aug 2017
Posts: 5483
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
Re: On a trip from the United States to Canada, Isabella took d U.S. dolla  [#permalink]

### Show Tags

22 Mar 2019, 02:02
1
Bunuel wrote:
On a trip from the United States to Canada, Isabella took d U.S. dollars. At the border she exchanged them all, receiving 10 Canadian dollars for every 7 U.S. dollars. After spending 60 Canadian dollars, she had d Canadian dollars left. What is the sum of the digits of d?

(A) 5
(B) 6
(C) 7
(D) 8
(E) 9

so money spent
d CAD = 7/10 * (d+60)
d= 140
sum = 5
IMO A
Intern
Joined: 05 Mar 2019
Posts: 16
Re: On a trip from the United States to Canada, Isabella took d U.S. dolla  [#permalink]

### Show Tags

22 Mar 2019, 10:52
I don't understand your reasonening, could you explain further?

Does our answer not depend on the unknown d?
Re: On a trip from the United States to Canada, Isabella took d U.S. dolla   [#permalink] 22 Mar 2019, 10:52
Display posts from previous: Sort by