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Re: How many of the 42 people in a group are employed students?
[#permalink]
23 Feb 2012, 07:38
5
Kudos
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Expert Reply
BANON wrote:
How many of the 42 people in a group are employed students?
(1) 29 of the 42 people are employed. (2) 24 of the 42 people are students.
It's straight E. Even when taken together we have:
{Total} = {Students} + {Employed} - {Both} + {Neither} --> we want to calculate: {Both}, # of employed students.
{42} = {24} + {29} - {Both} + {Neither} --> {Both} = 11 + {Neither}, since we don't know # of people who are neither employed nor students, we can not answer the question.
Re: How many of the 42 people in a group are employed students?
[#permalink]
23 Feb 2012, 20:06
3
Kudos
BANON wrote:
How many of the 42 people in a group are employed students?
(1) 29 of the 42 people are employed. (2) 24 of the 42 people are students.
Simple Sets Question: No need to solve the question as in these type ,look for the infor that how many are neither both of them. If the Info is not given ,it cannot be solved. Do not waste your time solving these coz you will waste a few extra seconds.
Re: How many of the 42 people in a group are employed students?
[#permalink]
23 Feb 2017, 05:14
Prompt Analysis Employed (student) + employed (non student) + non employed (student) + non employed(non student) = 42
Superset employed(student) ranges in 0 - 42
Translation In order to find the exact value, we need: 1# exact value of employed (student) 2# the value of rest of the three parameter 3# 4 equations and 4 mentioned variables.
Statement analysis St 1: Employed (student) + employed (non student) = 29. Cannot say anything about Employed (student). INSUFFICIENT. St 2: Employed (student) + non employed (student) = 24. Cannot say anything about Employed (student). INSUFFICIENT.
ST 1 & St 2: 3 equations and 4 variable. INSUFFICIENT
Re: How many of the 42 people in a group are employed students?
[#permalink]
21 Jul 2021, 02:11
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