Question:
A dealer buys a wristwatch for Rs 225 and spends Rs 15 on its repairs. If he sells the same for Rs 300, find his profit percent.
Solution:
A dealer buys a wrist watch for Rs. 225
Money spent on repair ing the watch $=$ Rs. 15
Therefore, C. $\mathrm{P}=$ Rs. $(225+15)=$ Rs. 240
S. $\mathrm{P}=$ Rs. 300
Profit $=\mathrm{SP}-\mathrm{CP}$
$=$ Rs. $(300-240)$
$=$ Rs. 60
Profit $\%=\frac{\text { Profit }}{\text { C.P }} \times 100$
$=\frac{60}{240} \times 100$
$=25 \%$
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