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UPSC 2014 CDS I Math Paper
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© examsnet.com
Question : 38
Total: 100
If the average of A and B is 30, the average of C and D is 20, then which of the following is/are correct ?
1. The average of B and C must he greater than 25.
The average of A and D must be less than 25.
Select the correct answer using the code given below :
[2014 CDS-I]
1 only
2 only
Either 1 or 2
Neither 1 nor 2
Validate
Solution:
If we take
A
=
50
,
B
=
10
,
C
=
10
and
D
=
30
As per information given in question
A
+
B
=
60
and
C
+
D
=
40
but
B
+
C
2
=
10
and
A
+
D
2
=
40
Thus neither statement A nor B are correct.
© examsnet.com
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