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7.Profit and Loss
medium
A manufacturer fixes his selling price at $33 \%$ over the cost of production. If cost of production goes up by $12 \%$ and manufacturer raises his selling price by $10 \%,$ his percentage profit is
A
$36 \frac{5}{9}$
B
$28 \frac{3}{8}$
C
$30 \frac{5}{8}$
D
$35$
Solution
Let $C.P.$ $=₹ 100$.
Initial $S.P.$ $=₹ 133$
Now, $C.P.$ $\uparrow$ by $12 \%=₹ 112$
$\therefore$ $S.P.$ $\uparrow$ by $10 \%=₹ 146.3$
Profit $\%=\frac{146.3-112}{112} \times 100$
$=30\frac{5}{8} \%$
Standard 13
Quantitative Aptitude
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