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7.Profit and Loss
easy
By selling $25$ $metres$ of cloth a trader gains the selling price of $5$ $metres$ of cloth. The gain of the trader in $\%$ is
A
$25$
B
$20$
C
$28$
D
$29$
Solution
$S.P.$ of $25\, m$ of cloth $-$ $C.P.$ of $25 m$ of $cloth = S.P.$ of $5 m$ of cloth
$\therefore$ $C.P.$ of $25 m$ of cloth $= S.P.$ of $20 m$ of cloth
$\therefore \quad C.P. =₹ 20, S.P. =₹ 25($ let $)$
$\therefore$ Gain percent $=\frac{5}{20} \times 100=25 \%$
Standard 13
Quantitative Aptitude
