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What is the average temperature from Monday through Saturday

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What is the average temperature from Monday through Saturday  [#permalink]

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New post Updated on: 13 Feb 2014, 06:58
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A
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E

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Question Stats:

81% (00:42) correct 19% (01:01) wrong based on 58 sessions

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What is the average temperature from Monday through Saturday of a week?

(1) The average temperature from Monday through Wednesday of the week is 36°C.
(2) The minimum and maximum temperatures between Thursday and Saturday of the week are 25°C and 38°C, respectively.

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Originally posted by bhatiamanu05 on 13 Feb 2014, 06:45.
Last edited by Bunuel on 13 Feb 2014, 06:58, edited 1 time in total.
Edited the question.
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Re: What is the average temperature from Monday through Saturday  [#permalink]

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New post 13 Feb 2014, 07:08
What is the average temperature from Monday through Saturday of a week?

(1) The average temperature from Monday through Wednesday of the week is 36°C. No info given about the temperatures from Thursday through Saturday. Not sufficient.

(2) The minimum and maximum temperatures between Thursday and Saturday of the week are 25°C and 38°C, respectively. Clearly insufficient.

(1)+(2) Probably the best way would be to construct sets which would give two different answers. This is actually quite easy:
{36, 36, 36, 25, 25, 38}
{36, 36, 36, 25, 38, 38}
Not sufficient.

Answer: E.
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Re: What is the average temperature from Monday through Saturday  [#permalink]

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New post 25 May 2017, 07:46
From Statement (1), we have information about the average temperature only for the period Monday
through Wednesday. Since there is no relevant information for the rest of the week, Statement (1) alone is
not sufficient.
Statement (2) has information about the minimum and the maximum temperatures for the period Thursday
through Saturday. It does not help us evaluate the average temperature for the period.
With two statements together, we do not have information about average temperatures for the complete
week. Hence, the statements together are not sufficient to answer the question.
The answer is (E).
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Re: What is the average temperature from Monday through Saturday  [#permalink]

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New post 25 May 2017, 11:22
To calculate average for the six days, we somehow need the SUM of all the 6 values. If we can get that sum, answer can be found; otherwise not.

Clearly Statement 1 only gives sum for first three days (36*3) and Statement 2 gives 'two' values out of the next three days values. Even after combining the two statements, we have values for five days only. Nothing about the sixth day. Sum cannot be found.

Hence Insufficient, answer is E
Re: What is the average temperature from Monday through Saturday &nbs [#permalink] 25 May 2017, 11:22
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