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If the average (arithmetic mean) of a, b, c, 5, and 6 is 6,
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29 Aug 2018, 16:15
29 Aug 2018, 16:15
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If the average (arithmetic mean) of a, b, c, 5, and 6 is 6, what is the average of a, b, c, and 13?
(A) 8
(B) 8.5
(C) 9
(D) 9.5
(E) It cannot be determined from the information given.
(A) 8
(B) 8.5
(C) 9
(D) 9.5
(E) It cannot be determined from the information given.
Re: If the average (arithmetic mean) of a, b, c, 5, and 6 is 6,
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03 Sep 2018, 18:17
03 Sep 2018, 18:17
1
(a+b+c+5+6)/5=6, so a+b+c+11=30, a+b+c=19.
a+b+c+13=32, average is (a+b+c+13)/4=32/4=8
a+b+c+13=32, average is (a+b+c+13)/4=32/4=8
Re: If the average (arithmetic mean) of a, b, c, 5, and 6 is 6,
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04 Sep 2018, 08:54
04 Sep 2018, 08:54
1
The answer is 8.
a+b+c+11 = 30
a+b+c = 19
a+b+c+13 = 32
32/4 = 8
a+b+c+11 = 30
a+b+c = 19
a+b+c+13 = 32
32/4 = 8
