Official Guide
In the figure above, what is the perimeter of rectangle ABPQ?
1) The area of rectangular region ABCD is 3 times the area of rectangular region ABPQ
2) The perimeter of rectangle ABCD is 54
OA E
In the figure above, what is the perimeter of rectangle ABPQ?
This topic has expert replies
GMAT/MBA Expert
- Brent@GMATPrepNow
- GMAT Instructor
- Posts: 16207
- Joined: Mon Dec 08, 2008 6:26 pm
- Location: Vancouver, BC
- Thanked: 5254 times
- Followed by:1268 members
- GMAT Score:770
Timer
00:00
Your Answer
A
B
C
D
E
Global Stats
Target question: What is the perimeter of rectangle ABPQ?
Statement 1: The area of rectangular region ABCD is 3 times the area of rectangular region ABPQ.
Since we aren't given any information regarding ACTUAL lengths, we cannot determine the perimeter of rectangle ABPQ
Since we cannot answer the target question with certainty, statement 1 is NOT SUFFICIENT
Statement 2: The perimeter of rectangle ABCD is 54
There are many possible cases in which ABCD's perimeter is 54, yet the perimeter of rectangle ABPQ is not fixed (see diagrams below)
Statement 2 is NOT SUFFICIENT
Statements 1 and 2 combined
There are several scenarios that satisfy BOTH statements. Here are two:
Case a: The measurements are as follows:
Notice that the area of ABCD (72 square units) is 3 times the area of rectangular region ABPQ (24 square units)
Also notice that ABCD has perimeter 54
In this case, the perimeter of rectangle ABPQ = 1 + 24 + 1 + 24 = 50
Case b: The measurements are as follows:
Notice that the area of ABCD (126 square units) is 3 times the area of rectangular region ABPQ (42 square units)
Also notice that ABCD has perimeter 54
In this case, the perimeter of rectangle ABPQ = 2 + 21 + 2 + 21 = 46
Since we cannot answer the target question with certainty, the combined statements are NOT SUFFICIENT
Answer: E
Cheers,
Brent