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10 Dec 2014, 03:37
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
56% (01:56) correct
44%
(01:44)
wrong
based on 36
sessions
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Not Attempted Yet
Daily temperatures were recorded for a certain period of time. Did at least 17 days record a temperature that was lower than the average temperature for the entire period?
(1) The sum total of all temperatures recorded was 18 times the average of all temperatures recorded in the period
(2) Exactly two-thirds of temperatures recorded were higher than the average value for the entire period
(1) The sum total of all temperatures recorded was 18 times the average of all temperatures recorded in the period
(2) Exactly two-thirds of temperatures recorded were higher than the average value for the entire period
I chose option E. I am not sure whether OA is correct. Can anybody confirm whether answer should be E?
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10 Dec 2014, 05:28
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desaichinmay22
Average temperature = sum total of all temperatures/total number of days-------------------------------1)
st.1 18.Average temperature = sum total of all temperatures, using 1) we have total number of days =18
st.2 Insufficient as we need to know about the total number of days.
st.1 + st.2 we know total number of days =18 , thus total number of days for which recorded temperature was lower than average = \(\frac{18}{3}\)
=6 which answer the original question as no
hence sufficient.
10 Dec 2014, 06:28
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manpreetsingh86
I missed that we can compute number of days from statement 1. Thanks for the explanation.
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
