Question

If Cost price of $8$ pens $=$ Selling price of $6$ pens. Find percentage profit

Answer 1

Let say cost of $1$ pen$=x$

cost of $8$ pen$=8x$

selling price of $6$ pen$=8x$

selling price of $1$ pen$=\frac{4x}{3}$

$\%$ profit$=\frac{\frac{4x}{3}-x}{x}\times 100=\frac{100}{3}=33.33\%$.