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In an investigation, it was found that 20% of the employees who are
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KarunMendiratta
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In an investigation, it was found that 20% of the employees who are [#permalink] New post  10 Aug 2021, 05:36
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In an investigation, it was found that 20% of the employees who are vulnerable to Mycobacterial infection are less than 17 years of age and 30% of the employees who are not vulnerable to Mycobacterial infection are more than or equal to 17 years of age. If 16% of total employees are more than or equal to 17 years of age and are vulnerable to Mycobacterial infection.

Quantity A
Quantity B
Percent employees, that are 17 years old or more, and are not vulnerable to Mycobacterial infection
24%


A. Quantity A is greater
B. Quantity B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
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KarunMendiratta
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Re: In an investigation, it was found that 20% of the employees who are [#permalink] New post  11 Aug 2021, 11:38
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Explanation:

Refer to the table;
Let the total number of employees be 100
Vulnerable employees be M
So, Not vulnerable = (100 - M)

Now,
We are given that 0.8M = 16% of T
i.e. M (vulnerable employees) = 20 and,
100 - M (Not vulnerable employees) = 80

Therefore, number of employees who are vulnerable and are less than 17 years old = 0.2(20) = 4
Complete rest of the table.

Col. A: \(\frac{24}{40} = 60\)%
Col. B: \(24\)%

Hence, option A
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hadiabbkh
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In an investigation, it was found that 20% of the employees who are [#permalink] New post  11 Aug 2021, 08:28
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Answer's in the question. '30% of employees who are not vulnerable to the infection are more than or equal to 17 years of age.'

30%>24%. Therefore, A.

That's the only way I could interpret this.
Question's a bit incomprehensible. If option A, by 'percent employees', refers to the percentage from the total number of employees, then the answer is C.
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dirroo
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Re: In an investigation, it was found that 20% of the employees who are [#permalink] New post  05 Dec 2021, 03:39
KarunMendiratta wrote:
Explanation:

Refer to the table;
Let the total number of employees be 100
Vulnerable employees be M
So, Not vulnerable = (100 - M)

Now,
We are given that 0.8M = 16% of T
i.e. M (vulnerable employees) = 20 and,
100 - M (Not vulnerable employees) = 80

Therefore, number of employees who are vulnerable and are less than 17 years old = 0.2(20) = 4
Complete rest of the table.

Col. A: \(\frac{24}{40} = 60\)%
Col. B: \(24\)%

Hence, option A



Could you explain as to how did you understand that we have to do 24 (not vulnerable and 17 or more)/40(total 17 or more) and not 24/100? Because I fell for the language trap and did 24 / 100 (total number). :/
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