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SSC CGL Tier 2 Exam 12 Jan 2017 Paper 1
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© examsnet.com
Question : 38
Total: 100
A man bought 500 metres of electronic wire at 50 paise per metre. He sold 50% of it at a profit of 5%. At what per cent should he sell the remainder so as to gain 10% on the whole transaction?
13%
12.5%
15%
20%
Validate
Solution:
(3) At the rate of 50 paise per metre,
C.P. of 250 metre of wire
=
R
s
.
(
250
×
50
100
)
= Rs. 125
C.P. of 500 metre of wire = Rs. 250
∴ For 10% overall profit,
Total S.P. = Rs.
(
250
×
110
100
)
= Rs. 275
S.P. of 250 metre of wire = Rs.
(
125
×
1
05
100
)
= Rs. 131.25
∴ S.P. of remaining 250 metre wire = Rs. (275 – 131.25)= Rs. 143.75
∴ Required profit per cent
=
(
143.75
−
125
125
)
×
100
=
18.75
×
100
125
=
15
%
© examsnet.com
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