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7.Profit and Loss
medium
If cost price is $Rs.\, 150$ less than the selling price and profit is $20 \%,$ then what is the selling price (in $Rs.$)?
A
$750$
B
$800$
C
$850$
D
$900$
Solution
Profit$\%$ $=20 \%$
$20=\frac{ SP – CP }{ CP } \times 100$
$20=\frac{150}{ CP } \times 100$
$CP =150 \times \frac{100}{20} \Rightarrow ₹ 750$
: $S.P =₹ 750+150=Rs. 900$
Standard 13
Quantitative Aptitude