Problem 97 [Girls and Pigs] - Clarification needed

I think statement of problem should mention that at least 1 girl and 1 pig is required, because otherwise the example is wrong and 200 legs with 500 tits have 10 solutions:

Pigs |Tits per pig |Girls

50 |10 |0

30 |14 |40

25 |16 |50

15 |24 |70

10 |34 |80

6 |54 |88

5 |64 |90

3 |104 |94

2 |154 |96

1 |304 |98