Question

4/25 of the purchases were stuffed animals. 10/21 of them were bears. What fraction of the purchases were stuffed bears?

Answer 1

Let's name all the purchases "x"

so $\frac{4}{25}$of them were stuffed animals, and out of that $\frac{10}{21}$ were bears.

to get the results we have to multiply the fraction of bears by the fraction of the stuff animals:

$\frac{4}{25}*\frac{10}{21}$.
 
and now we simplify:
$\frac{4*2}{5*21}$=$\frac{8}{105}$

and this is the answer!