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A total of 500 students applied to a college for admission to its MBA

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Bunuel
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A total of 500 students applied to a college for admission to its MBA [#permalink] New post   03 Jul 2020, 01:59
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A total of 500 students applied to a college for admission to its MBA program. The applicants were either freshers or experienced professionals. If 70% of all applicants were freshers and 20% of the experienced professionals had an experience of at least 2 years, then how many experienced professionals had an experience of less than 2 years?

A. 30
B. 90
C. 120
D. 150
E. 180
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C
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Re: A total of 500 students applied to a college for admission to its MBA [#permalink] New post   03 Jul 2020, 02:06
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Total students = 500
Freshers = 70% of 500 = 350
=> Experienced = 150

Experienced with more than or equal to 2 years of Exp. = 0.2*150 = 30
=> Experienced with less than 2 years of Exp. = 150 - 30 = 120

Answer: C
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Re: A total of 500 students applied to a college for admission to its MBA [#permalink] New post   03 Jul 2020, 02:21
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500 Students
Freshers=0,70*S(500)=350
Experienced professionals=500-350=150
Experienced professionals had an experience of at least 2 years=0,20*Experienced professionals(150)=30
Experienced professionals had an experience of less than 2 years=150-30=120

IMHO -> C
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Re: A total of 500 students applied to a college for admission to its MBA [#permalink] New post   03 Jul 2020, 02:21
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Explanation:

500 Students applied to College.
Out of which 70% are fresher = 350 Students
20% atleast 2years of experience = 100
Means less than 2 years of experience should be less than = 500 -450 = 50

Only Option A satisfies i.e. 30.

IMO-A
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Re: A total of 500 students applied to a college for admission to its MBA [#permalink] New post   03 Jul 2020, 02:57
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[quote]A total of 500 students applied to a college for admission to its MBA program. The applicants were either freshers or experienced professionals. If 70% of all applicants were freshers and 20% of the experienced professionals had an experience of at least 2 years, then how many experienced professionals had an experience of less than 2 years?

A. 30
B. 90
C. 120
D. 150
E. 180[quote]

Total applications = 500
freshers = 70%, experienced = 30% of 500 = 150
experienced pros with at least 2 years experience = 20% of 150 = 30
experienced pros with less than 2 years experience = 150 - 30 = 120
ans: C
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Re: A total of 500 students applied to a college for admission to its MBA [#permalink] New post   03 Jul 2020, 03:33
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Solution


    • Let’s make the following tree-structure:



    • So, the number of experienced professionals with less than 2 years of experience = 120
Thus, the correct answer is Option C.
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Re: A total of 500 students applied to a college for admission to its MBA [#permalink] New post   03 Jul 2020, 04:31
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IMO C

Total = 500
Fresher= 70%
Experienced Professional = 30%

Out of Experienced Professional,
Professional with Exp. >=2 = 20%
Professional with Exp. <2 = 80%

So, No. of Professional with <2 yrs experience = 80% of 30 % of 500 = 24% of 500 = 24/100 x 500= 120

C. 120
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Re: A total of 500 students applied to a college for admission to its MBA [#permalink] New post   03 Jul 2020, 23:36
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A total of 500 students applied to a college for admission to its MBA program. The applicants were either freshers or experienced professionals. If 70% of all applicants were freshers and 20% of the experienced professionals had an experience of at least 2 years, then how many experienced professionals had an experience of less than 2 years?

A. 30
B. 90
C. 120
D. 150
E. 180


70% = Freshers
30% = Experienced (Out of which 20% have at least 2 years exp, thus 80% have less than 2 yrs exp)

80% of 30% = 24% of total

24% of 500 students = 120

So, the answer is C
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Re: A total of 500 students applied to a college for admission to its MBA [#permalink] New post   04 Jul 2020, 03:07
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Ans: C

Total = 500

Freshers = 70% of 500 = 350
Experienced = 30% of 500 = 150 (Given only 2 categories)

Out of 150, 20% have experience of at least 2 years = 30
120 students have experience of less than 2 years
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Re: A total of 500 students applied to a college for admission to its MBA [#permalink] New post   04 Jul 2020, 04:16
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Since only 30% was from the category of experienced candidates. Hence (30% of 500= 150) were experienced.

Out of 150, 80% was not from the group of min 2 years of experience. Hence,

80% of 150=120

Option C

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Re: A total of 500 students applied to a college for admission to its MBA [#permalink] New post   04 Jul 2020, 04:58
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A total of 500 students applied to a college for admission to its MBA program. The applicants were either freshers or experienced professionals. If 70% of all applicants were freshers and 20% of the experienced professionals had an experience of at least 2 years, then how many experienced professionals had an experience of less than 2 years?

A. 30
B. 90
C. 120
D. 150
E. 180


C .

30% are experienced.
30% = 150.

Out of which 20% are experienced for atleast 2 yrs.
(20/100 )×150 = 30.

350+30 = 380

500 - 380 = 120
120 are those who are experienced for less than 2 yrs.

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Re: A total of 500 students applied to a college for admission to its MBA [#permalink] New post   04 Jul 2020, 05:54
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A total of 500 students applied to a college for admission to its MBA program. The applicants were either freshers or experienced professionals. If 70% of all applicants were freshers and 20% of the experienced professionals had an experience of at least 2 years, then how many experienced professionals had an experience of less than 2 years?


You should be able to pick up such questions for applying 2 by 2 matrix..
.................F................E...........Total
\(<2\).........a.............b........
\(\geq{2}\).........c.............d........
Total........350........150.........300

We are looking for the value of b.
Now E=500-350=150, and d=0.2*150=30.
Thus b=150-30=120

C
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Re: A total of 500 students applied to a college for admission to its MBA [#permalink] New post   05 Jul 2020, 11:06
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Ans - C

Given Fresher+ Work ex = 500
Also 70% of 500 = Fresher
Then 30% of 500 = work ex= 150

Now 20% of 150 have atleast 2 year or more work ex

So 80% of 150 will have less than 2 year work ex= 80/100 x 150 = 120

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A total of 500 students applied to a college for admission to its MBA [#permalink] New post   05 Jul 2020, 11:25
The total no. of students = 500
Freshers (F) = 70 % = 500 * 0.7
Experienced (E)= 30 % ( Only Fresher and Experienced students comprise the group ) = 500 * 0.3

E ( WE greater than or equal to 2 years) = 20 % of E = 500 *0.3 *0.2

E ( WE less than 2 years) = (500 * 0.3 - 500 * 0.3 * 0.2) OR (500 * 0.3 * 0.8 ) = 120

Therefore, Answer is 120, (C).
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A total of 500 students applied to a college for admission to its MBA [#permalink]
05 Jul 2020, 11:25
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