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21 Aug 2023, 01:30
Kudos
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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:
45%
(medium)
Question Stats:
73% (02:42) correct
27%
(02:32)
wrong
based on 165
sessions
History
Date
Time
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Not Attempted Yet
The average (arithmetic mean) of the 15 numbers in a list is 16. If the average of 12 of the numbers in the list is between 8 and 14, inclusive, which of the following could be the average of the other 3 numbers?
I. 24
II. 28
III. 72
A. I only
B. III only
C. I and II only
D. I and III only
E. I, II and III
I. 24
II. 28
III. 72
A. I only
B. III only
C. I and II only
D. I and III only
E. I, II and III
21 Aug 2023, 09:47
Kudos
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C should be the answer
Posted from my mobile device
Posted from my mobile device
21 Aug 2023, 09:54
Kudos
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Sum of 15 numbers =15*16 =240
8<=Avg of 12 no <= 14
If Avg of 12 nos. is 14, then sum of 12= 14*12=168
If Avg of 12 nos. is 8, then sum of 12= 8*12=96
So, the sum of 3 no.s will be between 72 and 144
So the Avg of 3 nos. can be 24 and 28
8<=Avg of 12 no <= 14
If Avg of 12 nos. is 14, then sum of 12= 14*12=168
If Avg of 12 nos. is 8, then sum of 12= 8*12=96
So, the sum of 3 no.s will be between 72 and 144
So the Avg of 3 nos. can be 24 and 28
