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

 It is currently 15 Oct 2019, 19:17

### 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

# If 7a = 6b and ab ≠ 0, what is the ratio of a/7 to b/6?

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 58340
If 7a = 6b and ab ≠ 0, what is the ratio of a/7 to b/6?  [#permalink]

### Show Tags

22 Jan 2019, 02:02
2
1
00:00

Difficulty:

25% (medium)

Question Stats:

76% (01:34) correct 24% (01:46) wrong based on 44 sessions

### HideShow timer Statistics

If 7a = 6b and ab ≠ 0, what is the ratio of a/7 to b/6?

A 13/49

B 13/36

C 36/49

D 6/7

E 7/6

_________________
VP
Joined: 31 Oct 2013
Posts: 1471
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Re: If 7a = 6b and ab ≠ 0, what is the ratio of a/7 to b/6?  [#permalink]

### Show Tags

22 Jan 2019, 02:06
1
Bunuel wrote:
If 7a = 6b and ab ≠ 0, what is the ratio of a/7 to b/6?

A 13/49

B 13/36

C 36/49

D 6/7

E 7/6

Given,

7a = 6b

a/b = 6/7.

Again ,

a/7 to b/6

=a/7 * 6/b

=a/b * 6/7

= 6/7 * 6/7

= 36/49.

GMAT Club Legend
Joined: 18 Aug 2017
Posts: 4999
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
Re: If 7a = 6b and ab ≠ 0, what is the ratio of a/7 to b/6?  [#permalink]

### Show Tags

22 Jan 2019, 05:06
Bunuel wrote:
If 7a = 6b and ab ≠ 0, what is the ratio of a/7 to b/6?

A 13/49

B 13/36

C 36/49

D 6/7

E 7/6

a=6b/7

a/7/b/6
would be
36/49
IMO C
Senior Manager
Joined: 15 Feb 2018
Posts: 365
Re: If 7a = 6b and ab ≠ 0, what is the ratio of a/7 to b/6?  [#permalink]

### Show Tags

26 Jan 2019, 00:28
I chose C and I still don't understand either of the above posts.
Intern
Joined: 24 Jan 2013
Posts: 15
GMAT 1: 660 Q49 V31
If 7a = 6b and ab ≠ 0, what is the ratio of a/7 to b/6?  [#permalink]

### Show Tags

26 Jan 2019, 00:45
1
7 a = 6 b

this implies
$$\frac{a}{b}=\frac{6}{7}$$

We need to find a/7 : b/6

which is equal to $$\frac{a}{7}*\frac{6}{b}$$

OR $$\frac{a}{b}*\frac{6}{7}$$
NOW A/B= 6/7

Put values - $$\frac{6}{7}*\frac{6}{7}$$

$$=\frac{36}{49}$$

Hence c[m]

Please give Kudos if my post was of any help
_________________
Please give Kudos if my post was of any help
If 7a = 6b and ab ≠ 0, what is the ratio of a/7 to b/6?   [#permalink] 26 Jan 2019, 00:45
Display posts from previous: Sort by