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# A certain species of bacteria grows at a constant rate

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Manager
Joined: 14 Apr 2017
Posts: 248
Location: India
sandeep : sharma
GPA: 3.9
A certain species of bacteria grows at a constant rate  [#permalink]

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18 Sep 2017, 09:04
1
Hi Folks,

IR series: Please try this question
Attachment:

q34.JPG [ 62.08 KiB | Viewed 949 times ]

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Joined: 25 Jul 2017
Posts: 12
Re: A certain species of bacteria grows at a constant rate  [#permalink]

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19 Sep 2017, 03:52
Let us consider r the factor.

At end of 1 hr......p
At end of 2 hr......pr
.
.
At end of 5 hr....pr^4

pr^4=p^2

r=p^1/4

At t=0 , P^(1-1/4)=p^3/4 ...Ans
BSchool Forum Moderator
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Re: A certain species of bacteria grows at a constant rate  [#permalink]

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19 Sep 2017, 11:10
What is the source of this IR problem?
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Intern
Joined: 04 Nov 2014
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Location: Portugal
Concentration: Strategy, Technology
GMAT 1: 690 Q48 V37
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WE: Analyst (Telecommunications)
Re: A certain species of bacteria grows at a constant rate  [#permalink]

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01 Oct 2017, 06:25
panthersarkar wrote:
Let us consider r the factor.

At end of 1 hr......p
At end of 2 hr......pr
.
.
At end of 5 hr....pr^4

pr^4=p^2

r=p^1/4

At t=0 , P^(1-1/4)=p^3/4 ...Ans

Another way to see this: p^2 = p^(5t+t0)
By experimenting several values we get to p(t0)=p^3/4 & GF = p^1/4
Senior Manager
Joined: 02 Apr 2014
Posts: 471
GMAT 1: 700 Q50 V34
Re: A certain species of bacteria grows at a constant rate  [#permalink]

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07 Nov 2017, 10:54
vivek6199 wrote:
What is the source of this IR problem?

Source is Manhattan
Re: A certain species of bacteria grows at a constant rate &nbs [#permalink] 07 Nov 2017, 10:54
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# A certain species of bacteria grows at a constant rate

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