Source: Manhattan GMAT
Is Hector taller than Charley?
(1) Hector is 5 feet 7 inches tall.
(2) When Hector stands on a 3-inch thick book, he is one inch taller than Charley.
The OA is B.
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Is Hector taller than Charley?
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BTGmoderatorLU
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BTGmoderatorLU wrote:Source: Manhattan GMAT
Is Hector taller than Charley?
(1) Hector is 5 feet 7 inches tall.
(2) When Hector stands on a 3-inch thick book, he is one inch taller than Charley.
Target question: Is Hector taller than Charley?
Statement 1: Hector is 5 feet 7 inches tall.
No information about Charley.
Charley COULD be 8 feet tall (i.e., taller than Hector) or Charley COULD be 3 feet tall (i.e., shorter than Hector)
Since we cannot answer the target question with certainty, statement 1 is NOT SUFFICIENT
Statement 2: When Hector stands on a 3-inch thick book, he is one inch taller than Charley.
This tells us that, when NOT standing on a book, Hector is 2 inched taller than Charley.
So, the answer to the target question is YES, Hector IS taller than Charley
Since we can answer the target question with certainty, statement 2 is SUFFICIENT
Answer: B
Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
