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The population of a bacteria culture doubles every 2 minutes
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01 Jul 2020, 10:00
01 Jul 2020, 10:00
Expert Reply
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Question Stats:
62% (01:30) correct
37% (01:23) wrong based on 32 sessions
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The population of a bacteria culture doubles every 2 minutes. Approximately how many minutes will it take for the population to grow from 1,000 to 500,000 bacteria?
(A) 10
(B) 12
(C) 14
(D) 16
(E) 18
(A) 10
(B) 12
(C) 14
(D) 16
(E) 18
Re: The population of a bacteria culture doubles every 2 minutes
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01 Jul 2020, 10:00
01 Jul 2020, 10:00
Expert Reply
Post A Detailed Correct Solution For The Above Questions And Get A Kudos.
Question From Our New Project: GRE Quant Challenge Questions Daily - NEW EDITION!
Question From Our New Project: GRE Quant Challenge Questions Daily - NEW EDITION!
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Re: The population of a bacteria culture doubles every 2 minutes
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01 Jul 2020, 10:30
01 Jul 2020, 10:30
1
Carcass wrote:
The population of a bacteria culture doubles every 2 minutes. Approximately how many minutes will it take for the population to grow from 1,000 to 500,000 bacteria?
(A) 10
(B) 12
(C) 14
(D) 16
(E) 18
(A) 10
(B) 12
(C) 14
(D) 16
(E) 18
When we scan the answer choices (ALWAYS scan the answer choices BEFORE deciding on the approach you'll take), we see that the number of population "doublings" will be between 5 and 9.
Given these relatively small values, we might solve this question by creating a growth table
MINUTES ELAPSED | POPULATION
0 | 1,000
2 | 2,000
4 | 4,000
6 | 8,000
8 | 16,000
10 | 32,000
12 | 64,000
14 | 128,000
16 | 256,000
18 | 512,000 DONE!!
Answer: E
Cheers,
Brent
