SSC CGL Tier II 12 Jan 2017 Paper 1

Question : 38 of 100

Marks: +1, -0

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

= {Rs} .( {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 \%

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