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7.Profit and Loss
easy
The ratio of the cost price and the selling price is $4: 5 .$ The profit percent is
A
$10$
B
$20$
C
$25$
D
$30$
Solution
$\frac{\text { Cost price }}{\text { Selling price }}=\frac{4}{5}$
$\therefore \quad$ Profit percent $=\frac{\text { S.P. }-\text { C.P. }}{\text { C.P. }} \times 100=\frac{5-4}{4} \times 100=25 \%$
Standard 13
Quantitative Aptitude