your answer is c.1000 beads
think about it like this how many times can .48 go into 500...1041.67 times
or you can think of it like this how many .48g beads do i need to reach 500g
then you simply do some division [tex] \frac{500}{.48} [/tex]
remember be careful to put the decimal point when dividing!! hope this helps :)