Question

the selling price of 10 pencil is equal to the cost price of 11 pencil what is profit persent

Answer 1

Let the cost price of 1 pencil be x and the profit on 1 pencil be P.
Thus SP of 1 pencil is
$x + p$
Now according to question,
$10(x + p) = 11x \\ 10x + 10p = 11x \\ 10p = x \\ p = \frac{x}{10}$
Now profit percent is
$\frac{p}{cp} \times 100 \\ = \frac{ \frac{x}{10} }{x} \times 100 \\ = \frac{x}{10x} \times 100 = 10\%$
Brainliest??

Answer 2

Here's the profit percent of the pencil