What is the value of tv/w?
(1) 7t = 6w and v=2w
(2) t/w = 6/7 and v/2 = 14
OA - B
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The Princeton Review ----- Fractions/ Equations
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Hi Tmoni26,
A combination of 'math skills' and TESTing VALUES can help you to quickly answer this question.
We're asked for the value of (T)(V)/W
Fact 1: 7T = 6W and V = 2W
IF....
W = 1
V = 2
T = 6/7
The answer to the question is (12/7)/1 = 12/7
IF....
W = 2
V = 4
T = 12/7
The answer to the question is (48/7)/2 = 48/14 = 3 6/14
Fact 1 is INSUFFICIENT
Fact 2: T/W = 6/7 and V/2 = 14
Since T/W = 6/7, we can substitute THAT ratio directly into the question.
V/2 = 14
V = 28
The answer to the question is (6)(28)/7 and that is the ONLY possible answer.
Fact 2 is SUFFICIENT.
Final Answer: B
GMAT assassins aren't born, they're made,
Rich
A combination of 'math skills' and TESTing VALUES can help you to quickly answer this question.
We're asked for the value of (T)(V)/W
Fact 1: 7T = 6W and V = 2W
IF....
W = 1
V = 2
T = 6/7
The answer to the question is (12/7)/1 = 12/7
IF....
W = 2
V = 4
T = 12/7
The answer to the question is (48/7)/2 = 48/14 = 3 6/14
Fact 1 is INSUFFICIENT
Fact 2: T/W = 6/7 and V/2 = 14
Since T/W = 6/7, we can substitute THAT ratio directly into the question.
V/2 = 14
V = 28
The answer to the question is (6)(28)/7 and that is the ONLY possible answer.
Fact 2 is SUFFICIENT.
Final Answer: B
GMAT assassins aren't born, they're made,
Rich
GMAT/MBA Expert
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[email protected]
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- Joined: Sun Jun 23, 2013 6:38 pm
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Hi Tmoni26,
There's nothing wrong with taking that approach with Fact 1, BUT you still have to account for the value of "V" also (which we're told is twice the value of "W"). As the value of W changes, the answer to the question changes.
GMAT assassins aren't born, they're made,
Rich
There's nothing wrong with taking that approach with Fact 1, BUT you still have to account for the value of "V" also (which we're told is twice the value of "W"). As the value of W changes, the answer to the question changes.
GMAT assassins aren't born, they're made,
Rich
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Hi Tmoni26,
You were heading in the right direction! Take a look at the screenshot below:
You were heading in the right direction! Take a look at the screenshot below:
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