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25 Nov 2018, 23:50
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E
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Difficulty:
5%
(low)
Question Stats:
97% (00:33) correct
3%
(00:45)
wrong
based on 133
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If the average (arithmetic mean) of x, y, and z is 20, which of the following is the value of z in terms of x and y?
A. 20 - x - y
B. 20 + x + y
C. 40 - x - y
D. 40 + x + y
E. 60 - x - y
A. 20 - x - y
B. 20 + x + y
C. 40 - x - y
D. 40 + x + y
E. 60 - x - y
MidhilaMohan
26 Nov 2018, 05:34
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z=20.3-x-y
option E
option E
