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GMAT Club 12 Days of Christmas is a 4th Annual GMAT Club Winter Competition based on solving questions. This is the Winter GMAT competition on GMAT Club with an amazing opportunity to win over $40,000 worth of prizes!
16 Oct 2019, 08:13
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
93% (00:34) correct
7%
(00:34)
wrong
based on 282
sessions
History
Date
Time
Result
Not Attempted Yet
How many people received a certain survey?
(1) Six-tenths of those who received the survey responded.
(2) Of those who received the survey, 42 responded.
(1) Six-tenths of those who received the survey responded.
(2) Of those who received the survey, 42 responded.
16 Oct 2019, 08:22
Kudos
Bookmarks
Bunuel
How many people received a certain survey?
(1) Six-tenths of those who received the survey responded.
(2) Of those who received the survey, 42 responded.
(1) Six-tenths of those who received the survey responded.
(2) Of those who received the survey, 42 responded.
Asked : Total number of people Surveyed
(1) Six-tenths of those who received the survey responded.
6/10(Total) responded, We cannot find the total. Not Suff
(2) Of those who received the survey, 42 responded.
We cannot find the total. Not Suff
Combining 1 & 2
6/10(Total)=42
We can calculate Total number of people Surveyed
Hence C
23 Mar 2020, 13:12
Kudos
Bookmarks
Bunuel
How many people received a certain survey?
(1) Six-tenths of those who received the survey responded.
(2) Of those who received the survey, 42 responded.
(1) Six-tenths of those who received the survey responded.
(2) Of those who received the survey, 42 responded.
Target question: How many people received a certain survey?
Statement 1: 6/10 of those who received the survey responded.
This statement is clearly insufficient to answer the target question with certainty
Statement 1 is NOT SUFFICIENT
Statement 2: Of those who received the survey, 42 responded.
This statement is clearly insufficient to answer the target question with certainty
Statement 2 is NOT SUFFICIENT
Statements 1 and 2 combined
Let T = the total number of people who received the survey
From the information in statement 1, we can write: The number of people who responded to the survey = (6/10)T
Since statement to tells us that 42 people responded to the survey, we can write: (6/10)T = 42
At this point, we need only recognize that we COULD solve this equation for T, which means we COULD answer the target question with certainty
As such, the combined statements are SUFFICIENT
Answer: C
ASIDE: Let's solve the equation "for fun"
Take: (6/10)T = 42
Multiply both sides of the equation by 10 to get: 6T = 420
Divide both sides by 6 to get: T = 70
This means that 70 received the survey
Answer: C
Cheers,
Brent
