Problem of the week

FARMERS DILEMMA
A farmer ordered 100 animals for $100.00 from a local mill. He knew he had ordered some pigs, calves, and chicks, but he accidently lost his receipt, and had forgotten how many of each he had ordered. He knew pigs were $3 each, calves were $10 each, and chicks were $0.50 each. Using this information, determine the farmer order from the mill.