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Eco Wildlife Preserve contains 5x zebras and 2x lions, where x is a positive integer. If the lions succeed in killing z of the zebras, is the new ratio of zebras to lions less than 2 to 1?
1) \(z > x\)
2) \(z = 4\)
OA A
Eco Wildlife Preserve contains 5x zebras and 2x lions, where x is a positive integer...
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Last edited by Jay@ManhattanReview on Mon Feb 10, 2020 10:06 pm, edited 1 time in total.
GMAT/MBA Expert
- Jay@ManhattanReview
- GMAT Instructor
- Posts: 3008
- Joined: Mon Aug 22, 2016 6:19 am
- Location: Grand Central / New York
- Thanked: 470 times
- Followed by:34 members
No. of zebras left after z no. of zebras were killed = 5x – z;
New ratio of zebras and lions = (5x – z)/2x < 2/1
=> z < x.
Let's take each statement one by one.
1) \(z > x\)
Since z > x, the answer is no. Sufficient.
2) \(z = 4\)
Since we do not have any information about x, we cannot conclude whether z < x. Insufficient.
The correct answer: A
Hope this helps!
-Jay
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