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14 Jan 2017, 07:19
Kudos
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
72% (00:35) correct
28%
(00:48)
wrong
based on 85
sessions
History
Date
Time
Result
Not Attempted Yet
What is the perimeter of a rectangle with length L and width w?
(1) L-W = 15
(2) L+W = 35
(1) L-W = 15
(2) L+W = 35
14 Jan 2017, 09:48
Kudos
Bookmarks
HKD1710
The perimeter will be 2(L + W). So, basically we need to get the value of L + W to answer the question. Clearly the answer is B.
23 Nov 2017, 16:10
Kudos
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Hi All,
We're asked for the perimeter of a rectangle with a length of L and a width of W. You can use a mix of logic and TESTing VALUES to get to the correct answer. Regardless of your approach though, you'll need the formula for perimeter of a rectangle:
Perimeter = 2L + 2W
1) L - W = 15
Fact 1 doesn't provide us with the necessary information to determine the value of 2L + 2W. You can also TEST VALUES to prove the inconsistency:
IF....
L=16, W=1, then the perimeter is 32 + 2 = 34
L=17, W=2, then the perimeter is 34 + 4 = 38
Fact 1 is INSUFFICIENT
2) L + W = 35
Fact 2 gives us the value of L+W. If we double this equation, we'll have...
2L + 2W = 70 and that is the exact value that we're trying to determine. You can also TEST VALUES - and you'll find that the answer is ALWAYS 70.
Fact 2 is SUFFICIENT
Final Answer:
GMAT assassins aren't born, they're made,
Rich
We're asked for the perimeter of a rectangle with a length of L and a width of W. You can use a mix of logic and TESTing VALUES to get to the correct answer. Regardless of your approach though, you'll need the formula for perimeter of a rectangle:
Perimeter = 2L + 2W
1) L - W = 15
Fact 1 doesn't provide us with the necessary information to determine the value of 2L + 2W. You can also TEST VALUES to prove the inconsistency:
IF....
L=16, W=1, then the perimeter is 32 + 2 = 34
L=17, W=2, then the perimeter is 34 + 4 = 38
Fact 1 is INSUFFICIENT
2) L + W = 35
Fact 2 gives us the value of L+W. If we double this equation, we'll have...
2L + 2W = 70 and that is the exact value that we're trying to determine. You can also TEST VALUES - and you'll find that the answer is ALWAYS 70.
Fact 2 is SUFFICIENT
Final Answer:
GMAT assassins aren't born, they're made,
Rich
