can you solve this riddle?

[kat-e]

You have to buy EXACTLY 100 chickens. and you have to spend EXACTLY $100. chickens A=$10 B=$3 C=$.50
how can you solve this?
i forgot to say you have to buy at least one of each.

 

[person]

20 B and 80 C.
20 B=$60 and 80 C= $40.
$40+$60=$100
and 20+80=100

 

[BTownz_Boss13]

20 B's=$60.00 and 80 C's= $40.00
$60.00 80
+$40.00 & +20
----------- ------
$100.00 100

 

[Really Now?]

This is a homework question.
Just skip the question.
Your teacher won't be TOO mad.
Hopefully.....