Question

the cost price of 10 pens is same as selling price of 15 pens. find whether the deals leads to gain or loss​

Answer 1

We can write it as

10CP = 15SP

$= > \frac{cp}{sp} = \frac{15}{10} \\ = > \frac{cp}{sp} = \frac{3}{2}$

So, Loss% =

$\frac{loss}{cp} \times 100 \\ = > \frac{1}{3} \times 100 \\ = > 33.33\% \: \: \: or \: \: \: 33 \ \frac{1}{3}$

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