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Retired Moderator
Joined: 07 Jun 2014
Posts: 4806
GRE 1: Q167 V156
WE:Business Development (Energy and Utilities)
Akilah traveled at a rate of x miles per hour for 2x hours.
[#permalink]
15 Jul 2018, 02:57
15 Jul 2018, 02:57
Expert Reply
00:00
Question Stats:
79% (00:43) correct
20% (00:38) wrong based on 194 sessions
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Akilah traveled at a rate of x miles per hour for 2x hours.
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
_________________
Quantity A |
Quantity B |
The number of miles Akilah traveled |
\(3x\) |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
_________________
Sandy
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Retired Moderator
Joined: 07 Jun 2014
Posts: 4806
GRE 1: Q167 V156
WE:Business Development (Energy and Utilities)
Re: Akilah traveled at a rate of x miles per hour for 2x hours.
[#permalink]
15 Jul 2018, 03:35
15 Jul 2018, 03:35
1
Expert Reply
Explanation
Use D = RT:
Distance = \(x(2x)\)
Distance = \(2x^2\)
Which is greater, 2x2 or 3x? If x = 1, then 3x is greater.
But if x = 2, then 2x2 is greater.
Without information about the value of x, the relationship cannot be determined.
_________________
Use D = RT:
Distance = \(x(2x)\)
Distance = \(2x^2\)
Which is greater, 2x2 or 3x? If x = 1, then 3x is greater.
But if x = 2, then 2x2 is greater.
Without information about the value of x, the relationship cannot be determined.
_________________
Sandy
If you found this post useful, please let me know by pressing the Kudos Button
Try our free Online GRE Test
If you found this post useful, please let me know by pressing the Kudos Button
Try our free Online GRE Test
Re: Akilah traveled at a rate of x miles per hour for 2x hours.
[#permalink]
11 Sep 2019, 23:19
11 Sep 2019, 23:19
1
r = 2x*x which is = 2x^2
x could be anything so the answer d
x could be anything so the answer d
Re: Akilah traveled at a rate of x miles per hour for 2x hours.
[#permalink]
20 Sep 2019, 07:30
20 Sep 2019, 07:30
2
For those who tend to have more trouble with variables and need concrete numbers
X=1
1 mile per hour and traveling 2 hours -> 2 miles traveled; A < B
x=3
3 miles per hour and traveling 6 hours -> 18 miles vs 9 miles; A > B
Answer: D
X=1
1 mile per hour and traveling 2 hours -> 2 miles traveled; A < B
x=3
3 miles per hour and traveling 6 hours -> 18 miles vs 9 miles; A > B
Answer: D
Re: Akilah traveled at a rate of x miles per hour for 2x hours.
[#permalink]
18 Jul 2023, 08:24
18 Jul 2023, 08:24
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