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7.Profit and Loss
medium
A dealer buys a table listed at $Rs.\, 600$ and gets successive discount of $10 \%$ and $20 \% .$ What is his profit or loss percent if he sells at $Rs.$ $540 ?$
A
$25$
B
$20$
C
$15$
D
$17 \frac{1}{2}$
Solution
Given $MP =$ $Rs. 600$
Hence on giving successive discounts of $10 \%$ and $20 \%$,
$C P=600 \times \frac{90}{100} \times \frac{80}{100}=$ $Rs. 432$
$\%$ profit $=\frac{108}{432} \times 100=25 \%$
Standard 13
Quantitative Aptitude