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29 Aug 2019, 06:49
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D
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Difficulty:
5%
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Question Stats:
93% (00:48) correct
7%
(00:59)
wrong
based on 58
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What is the average (arithmetic mean) of a and b?
(1) The average (arithmetic mean) of a + 5 and b + 3 is 15.
(2) The average (arithmetic mean) of a, b, and 11 is 11.
(1) The average (arithmetic mean) of a + 5 and b + 3 is 15.
(2) The average (arithmetic mean) of a, b, and 11 is 11.
Archit3110
Major Poster
29 Aug 2019, 08:36
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Bunuel
#1
The average (arithmetic mean) of a + 5 and b + 3 is 15.
a+b+8=30
a+b=22
mean ; 11
sufficient
#2
The average (arithmetic mean) of a, b, and 11 is 11
sufficient
IMO D
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