GRE Prep 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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
0.91^8/0.91^9
[#permalink]
13 Jun 2018, 22:16
13 Jun 2018, 22:16
1
00:00
Question Stats:
78% (00:17) correct
21% (00:18) wrong based on 89 sessions
Hide Show timer Statistics
Quantity A |
Quantity B |
\(\frac{0.91^8}{0.91^9}\) |
1 |
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: 0.91^8/0.91^9
[#permalink]
14 Jun 2018, 06:11
14 Jun 2018, 06:11
1
amorphous wrote:
Quantity A |
Quantity B |
\(\frac{0.91^8}{0.91^9}\) |
1 |
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Approach #1:
Given:
Quantity A: (0.91^8)/(0.91^9)
Quantity B: 1
Apply Quotient Law to quantity A to get:
Quantity A: 0.91^(-1)
Quantity B: 1
Rewrite quantity A as:
Quantity A: 1/0.91
Quantity B: 1
Since the numerator (1) is greater than the denominator (0.91), we know that 1/0.91 is greater than 1
Answer: A
Cheers,
Brent
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: 0.91^8/0.91^9
[#permalink]
14 Jun 2018, 06:14
14 Jun 2018, 06:14
1
amorphous wrote:
Quantity A |
Quantity B |
\(\frac{0.91^8}{0.91^9}\) |
1 |
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Approach #2:
We can solve this question using matching operations
Given:
Quantity A: (0.91^8)/(0.91^9)
Quantity B: 1
Multiply both quantities by 0.91^9 to get:
Quantity A: 0.91^8
Quantity B: 0.91^9
Divide both quantities by 0.91^8 to get:
Quantity A: 1
Quantity B: 0.91
Answer: A
RELATED VIDEO FROM OUR COURSE
