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OG In college X the number of students enrolled

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AbeNeedsAnswers Master | Next Rank: 500 Posts Default Avatar
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OG In college X the number of students enrolled

Post Thu Aug 24, 2017 8:27 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    In College X the number of students enrolled in both a chemistry course and a biology course is how much less than the number of students enrolled in neither?

    (1) In College X there are 60 students enrolled in a chemistry course.
    (2) In College X there are 85 students enrolled in a biology course.

    E

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    Post Tue Sep 05, 2017 10:26 am
    Hi AbeNeedsAnswers,

    We're asked to determine how much LESS the number of students enrolled in BOTH a chemistry course and a biology course is relative to the number of students enrolled in NEITHER. The wording of this prompt implies that we're dealing with a standard Overlapping Sets question, so we can use the Overlapping Sets formula to solve it:

    Total = (Group 1) + (Group 2) - Both + Neither

    1) In College X there are 60 students enrolled in a chemistry course.

    Fact 1 tells us one of the Groups, but nothing else.
    Fact 1 is INSUFFICIENT

    2) In College X there are 85 students enrolled in a biology course.

    Fact 2 tells us one of the Groups, but nothing else.
    Fact 2 is INSUFFICIENT

    Combined, we can fill in 2 parts of the formula:

    Total = (60) + (85) - Both + Neither

    There's no way to determine any of the other values though.
    Combined, INSUFFICIENT

    Final Answer: E

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