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28 Jun 2022, 09:30
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
69% (03:11) correct
31%
(02:22)
wrong
based on 35
sessions
History
Date
Time
Result
Not Attempted Yet
A disease has infected an ant colony that consists of "workers" and "soldiers": 30% of the soldiers and 14% of the "workers" were infected. If that colony is inhabited by 7000 ants, out of which 1700 are infected, how many "workers" inhabit the colony?
A. 1500
B. 2500
C. 2750
D. 3000
E. 3250
A. 1500
B. 2500
C. 2750
D. 3000
E. 3250
sampathgelam
Joined: 02 Jul 2021
Last visit: 12 May 2025
Posts: 138
Own Kudos:
Given Kudos: 50
Location: India
Schools: IIM (A) IIMA '25 (A)
GMAT Focus 1: 665 Q87 V82 DI80 
GPA: 3
Products:
28 Jun 2022, 09:43
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Bunuel
Total Workers =7000= Soldiers (S) + Workers(W)
Also given the fact that : 0.30S + .14 W = 1700
Two Equations Two Variables, by solving we get W = 2500
Option B
28 Jun 2022, 09:48
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System of equations were I cancel one of the variables through elimination.
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