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- Quantitative Aptitude
7.Profit and Loss
hard
A shopkeeper sold some article at the rate of $Rs.\, 35$ per article and earned profit of $40 \% .$ At what price each article should have been sold so that profit of $60 \%$ was earned. in$Rs.$
A
$45$
B
$42$
C
$39$
D
$40$
Solution
Here initially $SP$ of some article $= Rs. 35$
Profit$\%$ $=40 \%$
Now, finally $SP$ of articles $=$ Rs. $x$
Profit$\%$ $=60 \%$
Here, $CP$ is same in each case
$\Rightarrow \quad(C P)_{1}=(C P)_{2}$
$\Rightarrow \frac{( SP )_{1}}{100+ P _{1} \%}=\frac{( SP )_{2}}{100+ P _{2} \%}, \frac{35}{140}=\frac{ x }{160}, x = Rs .40$
Standard 13
Quantitative Aptitude