GMATD11 wrote:
15) John works five days each week except when on the.
vacation or during weeks in which national holidays
occur. Four days a week he works in an insurance
company; on Fridays he works as a blacksmith. Last
week there were no holidays, and John was not on
vacation. Therefore, he must have worked in the
insurance company on Monday, Tuesday, Wednesday,
and Thursday last week.
Which one of the following is an assumption on
which the argument depends?
a) John never takes a vacation of more than one week in length.
b) Every day last week that John worked, he
worked for an entire workday.
C) John does not take vacations in weeks in which
national holidays occur.
d) Last week John worked neither on Saturday
nor on Sunday.
e) There were no days last week on which John
both worked in the insurance company and
also worked as a blacksmith.
I marked E
Conclusion:Therefore, he must have worked in the
insurance company on Monday, Tuesday, Wednesday,
and Thursday last week.
Premise:Four days a week he works in an insurance
company; on Fridays he works as a blacksmith. Last
week there were no holidays, and John was not on
vacation
Possible Assumption: As conclusion says he worked on M,T,W,T and F as a Blacksmith. at the same time, as we know he works only 5 days a week. So from the above data it is clear that he didn't worked on Sat and Sun.
POE:
a)
Incorrect John never takes a vacation of more than one week in length.
Not relevent to the present context.b)
Incorrect Every day last week that John worked, he
worked for an entire workday.
It doesn't link premise to the conclusion. Whether he works for full day or not it does't matter because we are concerned with only days in which he worked for last week.
So this one is also irrelevant.
C)
IncorrectJohn does not take vacations in weeks in which
national holidays occur.
Not relevant.
d)
CorrectLast week John worked neither on Saturday
nor on Sunday.
It matches with our thinking
Just recheck through "
Negation test"
On negating we get " Last week John worked on Saturday
and on Sunday". this negated option tears our conclusion.
e)
Incorrect There were no days last week on which John
both worked in the insurance company and
also worked as a blacksmith.
It has no relavence to the stimulus