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7.Profit and Loss
medium
In a certain store, the profit is $320 \%$ of the cost. If the cost increases by $25 \%$ but the selling price remains constant, approximately what percentage of the selling price is the profit?
A
$30$
B
$70$
C
$100$
D
$250$
Solution
Let $C P=Rs$. $100$
After $320 \%$ profit $S P=R s .420$
After increasing cost the,
$CP = Rs. 125 \quad[25 \%$ cost increase $]$
Profit $=420-125=$ $Rs. 295$
$\frac{295}{420} \times 100=70 \%$ (Appx.)
Standard 13
Quantitative Aptitude
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