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13 Apr 2018, 01:42
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
86% (00:40) correct
14%
(00:34)
wrong
based on 38
sessions
History
Date
Time
Result
Not Attempted Yet
What is the area of the rectangular floor?
(1) The length of the floor is 4 feet greater than its width.
(2) The perimeter of the floor is 56 feet.
(1) The length of the floor is 4 feet greater than its width.
(2) The perimeter of the floor is 56 feet.
13 Apr 2018, 01:47
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Bunuel
Area = Length*width
(1) Gives relationship between length and width but not the absolute values. Hence Insufficient.
(2) Gives us the perimeter but no relationship between L&W. Hence Insufficient.
(1) + (2) : We can find the absolute value of L & W by using the perimeter and relationship between them. (2 eqns & 2 unknowns)
Hence Sufficient & we do not need to solve further.
Hence Option (C) is our answer.
Best,
Gladi
13 Apr 2018, 01:47
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IMO C
St1 l=w+4
area= w(w+4)
insufficient
St2 p=2(l+w)
l+w=28
area =lw
insufficient
combining w+4+w=28
w=12
l=16
area=192 sq ft
St1 l=w+4
area= w(w+4)
insufficient
St2 p=2(l+w)
l+w=28
area =lw
insufficient
combining w+4+w=28
w=12
l=16
area=192 sq ft
