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

 It is currently 22 Jan 2019, 15:06

### 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 January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
• ### The winners of the GMAT game show

January 22, 2019

January 22, 2019

10:00 PM PST

11:00 PM PST

In case you didn’t notice, we recently held the 1st ever GMAT game show and it was awesome! See who won a full GMAT course, and register to the next one.
• ### Key Strategies to Master GMAT SC

January 26, 2019

January 26, 2019

07:00 AM PST

09:00 AM PST

Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.

# If 175 billion french francs is equivalent to 35 billion

Author Message
TAGS:

### Hide Tags

Intern
Joined: 21 Nov 2013
Posts: 39
If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

Updated on: 19 Jan 2014, 11:45
4
19
00:00

Difficulty:

55% (hard)

Question Stats:

60% (01:22) correct 40% (01:12) wrong based on 573 sessions

### HideShow timer Statistics

If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

The OE starts with "In this solution it is assumed that 1 billion = 109. However,
only minor modifications in the first three steps are needed (replace each appearance
of 10^9 with 10^12)".

What do they mean by that and why is that important for the question at all.
It confused me. Btw. I feel the "109" ought to be "10^9" but they misspelled it.

Millions has six zeros and billions has nine. And both numbers are given in "billions" so we
can ignore that completely anyway.

I will post OA separately but would be good to know why they wrote this. Supposedly,
everything has a reason.

(Small point: Source is not OG but Official GMATPrep Software)

Originally posted by BabySmurf on 19 Jan 2014, 10:01.
Last edited by BabySmurf on 19 Jan 2014, 11:45, edited 1 time in total.
Intern
Joined: 21 Nov 2013
Posts: 39
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

19 Jan 2014, 10:06
2
3
175 billion French francs = 35 billion USD Ignore billion

175 French francs = 35 USD divide by 5

35 French francs = 7 USD divide by 7

5 French francs = 1 USD divide by 5

1 French francs = 1/5 USD

f is just a variable. They could have written x, but they wrote f to
make it confusing.

Number of USD equivalent to French francs are given above. 1 Franc equals 1/5 USD.
So x Francs or for this case f equals f/5 francs.
##### General Discussion
SVP
Status: The Best Or Nothing
Joined: 27 Dec 2012
Posts: 1823
Location: India
Concentration: General Management, Technology
WE: Information Technology (Computer Software)
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

27 Mar 2014, 22:31
1
1
Drop the term "Billion"

175f = 35d

$$f = \frac{35}{175} * d$$

$$f = \frac{1}{5} * d$$

_________________

Kindly press "+1 Kudos" to appreciate

Intern
Joined: 25 Sep 2014
Posts: 5
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

01 Dec 2014, 09:30
You know that 175 Francs are equal to 35 USD. (Because both currencies are in billions anyway, you can ignore the units here)

The question asks for the right-hand side of the expression USD=.... and tries to confuse you by giving you variable "f" to represent the number of Francs. Don't let the GMAT trick you, you know better than that. You probably recognized that there is a variable in every answer choice. Get your thoughts straight and pick a smart value for "f". In fact, the question already provided you with a smart number. 175.

--> If Francs=f=175 and USD=35:

Francs(or "f)*x=USD
175*x=35
x=35/175=1/5 --> So f*1/5=USD, or f/5=USD
Manager
Joined: 24 Nov 2013
Posts: 57
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

16 Aug 2015, 22:03
1
we can eliminate few options if we are running out of time
175 francs is equivalent to 35 dollars. ..
so the dollar equivalent of f francs has to be a figure less than f itself.
eliminate b and c.
Math Expert
Joined: 02 Sep 2009
Posts: 52390
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

17 Aug 2015, 01:20
BabySmurf wrote:
If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

The OE starts with "In this solution it is assumed that 1 billion = 109. However,
only minor modifications in the first three steps are needed (replace each appearance
of 10^9 with 10^12)".

What do they mean by that and why is that important for the question at all.
It confused me. Btw. I feel the "109" ought to be "10^9" but they misspelled it.

Millions has six zeros and billions has nine. And both numbers are given in "billions" so we
can ignore that completely anyway.

I will post OA separately but would be good to know why they wrote this. Supposedly,
everything has a reason.

(Small point: Source is not OG but Official GMATPrep Software)

Check other Conversion problems to practice in Special Questions Directory.
_________________
Director
Joined: 23 Jan 2013
Posts: 560
Schools: Cambridge'16
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

25 Sep 2015, 21:47
Just logic:

1 dollar is 5 times as expensive as 1 franc. So if you have F as a amount of francs, the equivalent amount of dollars is F/5

Algebra: 175f=35d => 5f=d, so f=d/5

D
Current Student
Status: DONE!
Joined: 05 Sep 2016
Posts: 374
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

29 Nov 2016, 15:04
175 Francs = 35 Dollars (removed Billion portion for simplicity)

175F=35D (1)
175F/35=D (manipulate (1)) & reduce --> F/5 = D

D.
Target Test Prep Representative
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2830
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

11 Jan 2017, 07:09
3
BabySmurf wrote:
If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

We are given that 175 billion French francs = 35 billion United States dollars. We need to convert f francs to dollars. We can let x be the number of dollar that is equivalent to f francs and solve this problem using a proportion.

(175 billion)/(35 billion) = f/x

175/35 = f/x

175x = 35f

x = 35f/175

x = f/5

_________________

Jeffery Miller

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

Director
Status: Come! Fall in Love with Learning!
Joined: 05 Jan 2017
Posts: 533
Location: India
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

28 Feb 2017, 03:39
175 billion francs = 35 billion dollars
1 franc = 35/175 dollar = ⅕ dollar
f francs = f/5 dollars
_________________

GMAT Mentors

VP
Joined: 09 Mar 2016
Posts: 1287
If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

03 May 2018, 10:10
Bunuel wrote:
BabySmurf wrote:
If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

The OE starts with "In this solution it is assumed that 1 billion = 109. However,
only minor modifications in the first three steps are needed (replace each appearance
of 10^9 with 10^12)".

What do they mean by that and why is that important for the question at all.
It confused me. Btw. I feel the "109" ought to be "10^9" but they misspelled it.

Millions has six zeros and billions has nine. And both numbers are given in "billions" so we
can ignore that completely anyway.

I will post OA separately but would be good to know why they wrote this. Supposedly,
everything has a reason.

(Small point: Source is not OG but Official GMATPrep Software)

Check other Conversion problems to practice in Special Questions Directory.

Bunuel

if 1 USD equals 5 CHF

then why option B is icorrect ? 5 USD = 5*5 CHF

pushpitkc may be you can explain the logic

the question is : which of the following expressions represents the number of United States dollars equivalent to f francs?

Dollar to Franc
1 dollar = 5 francs

so 1d = 5F

so why B option is incorrect ?
Senior Manager
Joined: 29 Dec 2017
Posts: 386
Location: United States
Concentration: Marketing, Technology
GMAT 1: 630 Q44 V33
GMAT 2: 690 Q47 V37
GMAT 3: 710 Q50 V37
GPA: 3.25
WE: Marketing (Telecommunications)
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

03 May 2018, 17:37
The easiest method from my school time:

175 = 35
f = x (x - what we need to find),

multiply by diagonal numbers that do not have x and divide it then by the number, which is diagonal to x

x =F*35/175

It's a very convinient method to convert numbers.
Math Expert
Joined: 02 Sep 2009
Posts: 52390
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

04 May 2018, 02:50
1
dave13 wrote:
Bunuel wrote:
BabySmurf wrote:
If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

The OE starts with "In this solution it is assumed that 1 billion = 109. However,
only minor modifications in the first three steps are needed (replace each appearance
of 10^9 with 10^12)".

What do they mean by that and why is that important for the question at all.
It confused me. Btw. I feel the "109" ought to be "10^9" but they misspelled it.

Millions has six zeros and billions has nine. And both numbers are given in "billions" so we
can ignore that completely anyway.

I will post OA separately but would be good to know why they wrote this. Supposedly,
everything has a reason.

(Small point: Source is not OG but Official GMATPrep Software)

Check other Conversion problems to practice in Special Questions Directory.

Bunuel

if 1 USD equals 5 CHF

then why option B is icorrect ? 5 USD = 5*5 CHF

pushpitkc may be you can explain the logic

the question is : which of the following expressions represents the number of United States dollars equivalent to f francs?

Dollar to Franc
1 dollar = 5 francs

so 1d =[color=#ff0000] 5F

so why B option is incorrect ?

The question asks: which of the following expressions represents the number of United States dollars equivalent to f francs?

So, the question is: f francs = ? dollars. Do you see the difference between the actual question and the answer you are getting (highlighted)?

1 dollar = 5 francs, so 1 franc = 1/5 dollars. Therefore, f francs = f/5 dollars.
_________________
Re: If 175 billion french francs is equivalent to 35 billion &nbs [#permalink] 04 May 2018, 02:50
Display posts from previous: Sort by