BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

If a, b, and c are real numbers, is a/b > b/c?

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Legendary Member
Posts: 2214
Joined: Fri Mar 02, 2018 2:22 pm
Followed by:5 members

by deloitte247 » Sat Jun 02, 2018 3:47 pm

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

Target question = $$Is\ \frac{a}{b}>\frac{b}{c}?$$
$$\frac{a}{b}>\frac{b}{c}$$
$$\frac{a}{b}-\frac{b}{c}>0$$
$$\frac{ac-b^2}{bc}>0$$
Statement 1 = $$a>c$$
This does not give sufficient information about $$b$$ so statement 1 is INSUFFICIENT
Statement 2 = $$ac>b^2$$
$$ac-b^2>0$$
No information on 'bc' Statement 2 is INSUFFICIENT.
Combining the two statements together does not give any valuable information on B and cannot answer the target question. answer is Option E because both statement is INSUFFICIENT
Top

GMAT/MBA Expert

User avatar
Elite Legendary Member
Posts: 10392
Joined: Sun Jun 23, 2013 6:38 pm
Location: Palo Alto, CA
Thanked: 2867 times
Followed by:511 members
GMAT Score:800

by [email protected] » Sun Jun 03, 2018 10:40 am

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

Hi Gmat_mission,

We're told that A, B and C are real numbers. We're asked if A/B is greater than B/C. This is a YES/NO question and can be solved by TESTing VALUES.

1) A > C

IF.....
A=2, B=1, C=1 then 2/1 is greater than 1/1 and the answer to the question is YES
A=2, B=-1, C=1 then 2/1 is greater than -1/1 and the answer to the question is NO
Fact 1 is INSUFFICIENT

2) (A)(C) > B^2

IF.....
A=2, B=1, C=1 then 2 is greater than (1)^2 and the answer to the question is YES
A=2, B=-1, C=1 then 2 is greater than (-1)^2 = 1 and the answer to the question is NO
Fact 2 is INSUFFICIENT

Combined, we already have two TESTs that 'fit' both Facts and produce two different answers (one "YES" and one "NO"), so no more work is required.
Combined, INSUFFICIENT

Final Answer: E

GMAT assassins aren't born, they're made,
Rich
Contact Rich at [email protected]
Image
Top
Post new topic Post Reply
• Page 1 of 1