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Re: In a certain nursery, 15 percent of the plants developed a fungus and [#permalink]
2x2 matrix

---Die--ND---Total
F--15---10---25
NF--()---()---75
total-- ()--()---100
option A 25%


houston1980 wrote:
In a certain nursery, 15 percent of the plants developed a fungus and died. If 40 percent of the plants that developed the fungus did not die, what percent of the plants in the nursery developed the fungus?

A. 25%
B. 27%
C. 35%
D. 40%
E. 55%
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Re: In a certain nursery, 15 percent of the plants developed a fungus and [#permalink]
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Expert Reply
 
houston1980 wrote:
In a certain nursery, 15 percent of the plants developed a fungus and died. If 40 percent of the plants that developed the fungus did not die, what percent of the plants in the nursery developed the fungus?

A. 25%
B. 27%
C. 35%
D. 40%
E. 55%

­15% of Total => developed fungus and died.
40% of plants that developed fungus did not die => 60% of plants that developed fungus DID die

So 15% of Total = 60% of plants that developed fungus
Plants that developed fungus = 1/4 * Total = 25% of Total

Answer (A)

Check this video on percentages: 
https://youtu.be/HxnsYI1Rws8
 
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Re: In a certain nursery, 15 percent of the plants developed a fungus and [#permalink]
4
Kudos
Am I the only one not able to get these sentences right

for e.g. 15 percent of the plants developed a fungus and died is understood as 15 % of total developed fungus and died But

If 40 percent of the plants that developed the fungus did not die this sentence appears convulted and can have many interpretations like 40 percent of that developed fungus i.e. 40 percent of X or 40 percent of total 100 percent.

i am the only one getting this wrong or are there others also
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In a certain nursery, 15 percent of the plants developed a fungus and [#permalink]
1
Kudos
Assume 100 plants.
15 plant had fungus and died.
40% of plants that had developed fungus did not die. Therefore 60% of plants having fungus died.

Let x be the no.of plants that got fungus.

60% of x=15
x= 15*(5/3)
x= 25

Therefore, 25 of them had fungus. 25%

Posted from my mobile device
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In a certain nursery, 15 percent of the plants developed a fungus and [#permalink]
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