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UPSC 2013 CDS 2 Math Paper
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© examsnet.com
Question : 97
Total: 100
The average of u, v, w, x, y, z is 10. What is the average of
u
+
10
,
v
+
20
,
w
+
30
,
x
+
40
,
y
+
50
,
z
+
60
?
[2013 CDS-II]
30
35
40
45
Validate
Solution:
u
+
v
+
w
+
x
+
y
+
z
6
×
10
=
60
.........(1)
Therefore, new average
=
(
u
+
10
)
+
(
v
+
20
)
+
(
w
+
30
)
+
(
x
+
40
)
+
(
y
+
50
)
+
(
z
+
60
)
6
=
u
+
v
+
w
+
x
+
y
+
z
+
210
6
=
60
+
210
6
[Using(1)]
=
270
6
=
45
© examsnet.com
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