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NIFT PG 2008 Question Paper with solutions
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© examsnet.com
Question : 7
Total: 100
The length of room is
1
1
2
times its breadth. The cost of carpeting is at Rs. 150 per sq metre is Rs. 14,400 and the cost of white-washing the four walls at Rs. 5 per sq metre is Rs. 625. Find the length, breadth and height of the room
12m,8m,
3
1
8
m
12
1
2
m
,
8
1
8
m
,
3
1
8
m
12
3
5
m
,
8
2
3
m
,
3
2
4
m
Data inadequate
Validate
Solution:
Let length and breadth of the room be
3
x
2
m and x m respectively.,Then
3
x
2
×
x
=
14400
150
⇒
x
2
=
96
×
2
3
=
64
∴
x
=
8
Hence length
=
3
x
2
m
=
3
×
8
2
=
12
m
breadth = x m = 8 m
Let height of the room = h m ; then
⇒
2
(
12
+
8
)
×
h
=
625
5
h
=
125
2
×
20
=
25
8
m
=
3
1
8
m
Hence, length, breadth and heights are 12m,8m and
3
1
8
m.
© examsnet.com
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