ktrout2020 wrote:In how many ways can a coach select a 4-person university team from a pool of eligible candidates?
(1) The number of eligible candidates is three times as great as the number of slots on the team.
(2) 60% of the 20 athletes are eligible to play on the four-person university team.
Source: Veritas
Target question: In how many ways can a coach select a 4-person university team from a pool of eligible candidates?
This is a great candidate for
rephrasing the target question.
In order to determine the number of ways to select a 4-person university team,
we need to know the number of eligible candidates.
Let's let
n = the number of eligible candidates
Once we know the value of n, then the total number of ways to select a 4 people will equal nC4
So, let's REPHRASE the target question....
REPHRASED target question: What is the value of n?
Aside: Here's a video with tips on rephrasing the target question: https://www.gmatprepnow.com/module/gmat- ... cy?id=1100
Statement 1: The number of eligible candidates is three times as great as the number of slots on the team.
There are 4 available "slots"
So, we can write: n = (3)(4)
In other words,
n = 12 (there are 12 eligible candidates)
Since we can answer the
REPHRASED target question with certainty, statement 1 is SUFFICIENT
Statement 2: 60% of the 20 athletes are eligible to play on the four-person university team.
In other words, 60% of 20 = n
Solve, to get
n = 12 (there are 12 eligible candidates)
Since we can answer the
REPHRASED target question with certainty, statement 2 is SUFFICIENT
Answer: D
Cheers,
Brent
