Summer is Coming! Join the Game of Timers Competition to Win Epic Prizes. Registration is Open. Game starts Mon July 1st.

It is currently 18 Jul 2019, 23:02

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

If the ratio of a to b is 4 to 3 and the ratio of b to c is 1 to 5..

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Find Similar Topics 
Intern
Intern
avatar
Joined: 02 Mar 2015
Posts: 9
If the ratio of a to b is 4 to 3 and the ratio of b to c is 1 to 5..  [#permalink]

Show Tags

New post 17 Mar 2015, 12:25
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

89% (00:51) correct 11% (01:10) wrong based on 176 sessions

HideShow timer Statistics


If the ratio of a to b is 4 to 3 and the ratio of b to c is 1 to 5, what is the ratio of a to c?

A. 4/15
B. 1/3
C. 2/5
D. 4/5
E. 7/6

So the answer is 4 to 15. Two fractions are being multiplied. I don't understand why. There is text under the explanation saying "when you are given two ratios, their product or quotient will always produce a third ratio". This "rule" doesn't specify what kind of third ratio. We are looking for specific ratio here of a to c. Can somebody explain this please?
Current Student
avatar
Joined: 03 Jan 2014
Posts: 64
Concentration: Strategy, Operations
GMAT 1: 720 Q46 V42
GPA: 3.86
WE: Information Technology (Consulting)
Re: If the ratio of a to b is 4 to 3 and the ratio of b to c is 1 to 5..  [#permalink]

Show Tags

New post 17 Mar 2015, 16:08
If A:B is 4:3, and B:C is 1:5, the ratio of B:C can be rewritten as 3:15. Thus we can combine the two ratios to see that 4:3:15, so that A:C is 4:15.
EMPOWERgmat Instructor
User avatar
V
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 14583
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: Q170 V170
Re: If the ratio of a to b is 4 to 3 and the ratio of b to c is 1 to 5..  [#permalink]

Show Tags

New post 18 Mar 2015, 19:39
Hi MariaVorop,

If you're not comfortable with "combining" ratios, then you can still get to the correct answer by TESTing VALUES.

We're given two ratios to work with.....A:B is 4:3 and B:C is 1:5

IF....
A = 4, then....
B = 3

Since
B = 3
C = 15

The ratio of A:C is 4:15

Final Answer:

GMAT assassins aren't born, they're made,
Rich
_________________
760+: Learn What GMAT Assassins Do to Score at the Highest Levels
Contact Rich at: Rich.C@empowergmat.com

*****Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!*****

Rich Cohen

Co-Founder & GMAT Assassin

Special Offer: Save $75 + GMAT Club Tests Free
  Official GMAT Exam Packs + 70 Pt. Improvement Guarantee
www.empowergmat.com/
Intern
Intern
avatar
B
Joined: 22 Jun 2017
Posts: 4
If the ratio of a to b is 4 to 3 and the ratio of b to c is 1 to 5..  [#permalink]

Show Tags

New post 23 Dec 2018, 21:52
Can someone please explain why the answer for this question is A and not C?
EMPOWERgmat Instructor
User avatar
V
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 14583
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: Q170 V170
Re: If the ratio of a to b is 4 to 3 and the ratio of b to c is 1 to 5..  [#permalink]

Show Tags

New post 24 Dec 2018, 10:54
Hi sudha3510,

Are you comfortable with either of the explanations that appear above your post? And since you're asking about Answer C, what work did you do to get to that answer?

GMAT assassins aren't born, they're made,
Rich
_________________
760+: Learn What GMAT Assassins Do to Score at the Highest Levels
Contact Rich at: Rich.C@empowergmat.com

*****Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!*****

Rich Cohen

Co-Founder & GMAT Assassin

Special Offer: Save $75 + GMAT Club Tests Free
  Official GMAT Exam Packs + 70 Pt. Improvement Guarantee
www.empowergmat.com/
GMAT Club Bot
Re: If the ratio of a to b is 4 to 3 and the ratio of b to c is 1 to 5..   [#permalink] 24 Dec 2018, 10:54
Display posts from previous: Sort by

If the ratio of a to b is 4 to 3 and the ratio of b to c is 1 to 5..

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne