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प्रश्न
A T.V. set is sold for Rs. 6800 at a loss of 15%. Find
(i)cost price of the T.V. set.
(ii)new selling price of it, in order to gain 12%.
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उत्तर
S.P. of the T.V. set = Rs. 6800
Loss = 15%
(i) ∴ C.P. `=("S.P" xx 100)/(100 - "loss"%)`
= Rs. `(6800 xx 100)/(100 - 15)`
= Rs. `(6800 xx 100)/85` = Rs. 8000
(ii) In second case, gain = 12 %
∴ S.P. = `("C.P."(100 + 12))/100`
= Rs. `(8000 (100 + 12))/100`
= Rs. `(8000 xx 112)/100`
= Rs. 8960
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