Question

Naresh bought 4 dozen pencils at Rs. 10.80 a dozen and sold them for 80 paise each. Find his gain or loss percent.

Answer 1

cost of one dozen pencils $Rs.10.80$

$\therefore$ cost of $4$ dozen pencils $=10.80\times 4$

$=Rs43.20$

Now, Total cost of selling price of the pencils $=\frac{80\times 4\times 12}{100}$

$=38.40$

Here, we can see that amount of selling price is less than cost price

then,

$loss=43.20-38.40$

$4.80$

Now,

$loss\%$ $=\frac{4.80}{43.20}\times 100$

$=11.11\%$