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29 Aug 2018, 01:33
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Difficulty:
5%
(low)
Question Stats:
97% (01:07) correct
3%
(00:14)
wrong
based on 38
sessions
History
Date
Time
Result
Not Attempted Yet
What is the area of rectangle ABCD?
(1) l^2 + 2lw + w^2 = 16
(2) l^2 – 2lw + w^2 = 4
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Chethan92
Joined: 18 Jul 2018
Last visit: 21 Apr 2022
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Location: India
Concentration: Operations, General Management
Schools: IIMB EPGP'22 (M)
GMAT 1: 590 Q46 V25
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WE:Engineering (Energy)
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29 Aug 2018, 01:42
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From statement 1:
L and W can take values (3,1) or (2,2).
Then Area becomes L*W = 3 or 4.
Hence insufficient.
From statement 2:
Only (3,1) or (1,3) satisfies the equation.
2 is sufficient.
B is the answer.
L and W can take values (3,1) or (2,2).
Then Area becomes L*W = 3 or 4.
Hence insufficient.
From statement 2:
Only (3,1) or (1,3) satisfies the equation.
2 is sufficient.
B is the answer.
29 Aug 2018, 01:51
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Bunuel
(1) l^2 + 2lw + w^2 = 16
(l+w) = 4
several values are possible
3,1 => area = 3
2,2 => area =4
insufficient
(2) l^2 – 2lw + w^2 = 4
(l-w) = 2
again several values are possible
10,8
4,2
5,3
insufficient.
using both
l+w=4
l-w=2
l=3 and w=1
sufficient
C
