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02 May 2019, 03:32
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B
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Difficulty:
15%
(low)
Question Stats:
75% (00:48) correct
25%
(01:11)
wrong
based on 96
sessions
History
Date
Time
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Not Attempted Yet
What is the average (arithmetic mean) of 8a and 4b?
(1) a + b = 5
(2) 2a + b = 11
(1) a + b = 5
(2) 2a + b = 11
02 May 2019, 03:37
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Bunuel
What is the average (arithmetic mean) of 8a and 4b?
(1) a + b = 5
(2) 2a + b = 11
(1) a + b = 5
(2) 2a + b = 11
average (arithmetic mean) of 8a and 4b
re written as
4a+2b ; 2*(2a+b)
#1
a+b=5
a & b not known insufficeint
#2
2a+b=11
so 2*11; 22
IMO B ; sufficient
02 May 2019, 04:06
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Archit3110
Bunuel
What is the average (arithmetic mean) of 8a and 4b?
(1) a + b = 5
(2) 2a + b = 11
(1) a + b = 5
(2) 2a + b = 11
average (arithmetic mean) of 8a and 4b
re written as
4a+2b ; 2*(2a+b)
#1
a+b=5
a & b not known insufficeint
#2
2a+b=11
so 2*11; 22
IMO B ; sufficient
Posted from my mobile device
