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7.Profit and Loss
medium
By selling an article for $Rs.\, 102,$ there is a loss of $15 \%$ When the article is sold for $RS.\,134.40,$ the net result in the transaction is
A
$12 \%$ gain
B
$12 \%$ loss
C
$10 \%$ loss
D
$15 \%$ gain
Solution
$C.P.$ of article
$=\frac{100}{100-\text { loss per cent }} \times$ S.P.
$=\frac{100}{100-15} \times 102=₹ 120$
On selling at $₹134.40,$ we have,
Gain $=₹(134.4-120)=₹ 14.4$
$\therefore$ Gain percent
$=\frac{14.4}{120} \times 100=12 \%$
Standard 13
Quantitative Aptitude